United Kingdom

Territory
The United Kingdom consists of the four countries England, Wales, Scotland and Northern Ireland. This article covers only the UK and doesn't cover any British non-UK territories such as the Crown dependencies of Guernsey and Jersey (known as the Channel Islands) and the Isle of Man as well as British overseas territories, e.g. Gibraltar, St. Helena, the Falkland Islands and Ascension Island or any other Commonwealth area.

Operators
The UK has 4 network operators:
 * EE (for Everything Everywhere, by British Telecom)
 * Vodafone
 * O2 (by Telefónica)
 * 3 (= Three by Hutchison)

About 50 MVNOs operate on all four networks.

EU roaming regulations
The UK is still part of the EU, where from June 2017 new international roaming rules are enforced. In most European countries you can now 'roam like at home' at domestic rates rather than excessive roaming rates.

Following a referendum in favour of leaving the EU in 2016, the UK gave two years' notice to leave the EU by March 2019. The UK has not yet given the required one year's notice to leave the EEA, throughout which EU roaming regulations apply, as explained in the European Union chapter. Therefore the UK remains bound by EU roaming regulations for the foreseeable future.

Most UK providers have implemented the new rules, but may cap large data packages, while O2, Three and their MVNOs don't offer 4G/LTE roaming yet. Check every provider below for details.

Frequencies
2G/GSM is on 900 and 1800 MHz (except Three which has only 3G and 4G), 3G/UMTS is on 900 and 2100 MHz.

4G/LTE has started in 2013 on all networks. Frequencies on 800, 1800, 2100 and 2600 MHz bands are used. 4G is offered by all networks on prepaid, but only on some MVNOs so far.

Coverage
Coverage is quite good on 2G and more than 90% of population on 3G, but there are still blackspots without any mobile coverage. So if you go to a remote area in the countryside, it's wise to check coverage beforehand.

On 4G/LTE, EE has the best nationwide coverage at about 95% of population, followed by Vodafone at 85% and 3 and O2 at around 65%.

Prepaid SIM cards are by default anonymous in the UK and unregistered, though some providers may encourage you to register with them. But this is only to link your SIM card to your online account. You don't have to specify any personal details, but your email address and set a password.

Prepaid is usually called "pay as you go" (in short "PAYG") in the UK, although there is usually a distinction between true PAYG incremental charges and prepaid monthly charges such as giffgaff's goodybags. This guide starts with all 4 physical network providers followed by their most significant resellers or MVNOs on the market.

London Underground
There is no mobile coverage in the train tunnels of the London Underground ("the Tube"). But just before the London 2012 Olympics, Virgin Media started to build up WiFi coverage in Tube stations. By 2017, 250 Tube stations are covered including their ticket halls, escalators, corridors and platforms. Coverage is yet to be provided in 9 stations, most notably Bond Street, and coverage is not planned in 4 stations, most notably Heathrow T5. Further coverage information is available from Transport for London and Virgin Media.

Customers, including prepaid, of all 4 UK network providers and Virgin Mobile can use this WiFi for free. EE customers need to have topped up at least £5 in the last 30 days, for Vodafone you need to have bought a Big Bundle; O2 customers need to have topped up their phone at least once in the last 90 days; and Three customers need to have done any activity within the last 30 days. MVNOs other than Virgin Mobile are mostly unsupported. Giffgaff recently announced a beta launch, but it's not yet reliable. Virgin Media sells standalone passes for its WiFi too, but it's generally cheaper to meet the minimum requirements of network providers. After logging in for the first time, the system indefinitely remembers your device's MAC address for future usage and you will not need to log in again. Then at the beginning of your journey, you need to load any web page in your web browser, which redirects to a splash page, and you should not need to do so again during the rest of your journey.

Channel Tunnel
In the Channel Tunnel between UK and France there is no WiFi, but mobile coverage 100 metres below sea level in 2G, 3G and 4G/LTE. Coming from France to the UK, coverage is provided by the French networks Orange, SFR and Bouygues, but not Free mobile. In the opposite direction of travel, coverage is provided by the UK networks EE, Vodafone, O2, but not Three.

Content Lock
Prepaid SIM cards in the UK are delivered with a so-called "Content Lock" in place. This is to protect children from accessing adult content. The problem is that a white-listing approach is used for this, meaning that everything that has not been actively approved as non-adult will be treated as "adult".

This can seriously interfere with your internet accessibility, e.g. some users could not use their instant messaging services. Even emails and all "unguided" forums like Facebook or Twitter can be affected. However this can be bypassed using a VPN or proxy app/software to conceal your identity

The usual way to disable the content lock is to enter credit card data to prove your age; but this only works with UK-issued credit cards, and as a tourist you probably won't have one of those. Therefore when you buy a new SIM card in store insist that the lock will be removed right away (what takes one minute). For this you may need to provide some form of ID to prove your age, if you look young.

Availability
Starter packs are available online through the website of the provider to be delivered for free. For this you need to have an UK postal address. In many UK stores like supermarkets (Tesco, Asda, etc..), newsagents or independent phone shops starters of major brands are sold for 99p. They don't include any credit and need to be topped up for use. All PAYG SIM cards are anonymous in the UK and don't require registration. That's why they are sent all over the world by vendors through eBay and other sales channels.

Recharges
Topping-up your UK SIM can be done in three different ways, but only one of them remains accessible to most visitors.

To top-up via an ATM (known in the UK as "Cashpoint") is widely accepted, but you need to have an UK-issued credit or debit card for that. Foreign cards are not accepted.

Unfortunately, the same is true to online top-ups on the websites of the providers. Generally only debit and credit cards given out in Britain are allowed for recharges, but there are sporadic exceptions. This very restrictive policy is supposedly to avoid fraud, but shuts out many customers. As long as you are in the country you can always buy scratch cards or top-up vouchers from vendors that are widely available in shops throughout the UK. These shops are marked by a green top-up sign and normally sell credit for all providers. Minimum top-up amount is usually £5, with a few providers £10.

This leaves visitors with the tricky task, how to refill from abroad while not having this domestic option or a UK-based bank card to keep a SIM card alive or just to add some credit abroad. There are few private online service providers like mobiletopup.co.uk, uksims.eu, kwikpay.com or with Bitcoins Bitrefill that accept international cards and do it for a 10-15% surcharge.

Sometimes, it's possible to buy scratch cards on eBay.co.uk. If you are resident in the EEA or Switzerland, you can use a Revolut physical and/or virtual prepaid MasterCard to recharge all UK SIM cards online. Revolut's cards early cards had an BIN/IIN of 5391 23, which is recognised as being issued in the UK is confirmed to work for topping up UK SIM cards. However, Revolut's latest cards since mid-2017 have a BIN/IIN of 5352 98, which might be recognised instead as being issued in Romania. Also you can try to buy UK prepaid gift cards and use them for recharging. As all these procedures are troublesome, think them over before you leave the UK.

For two weeks every December, American Express UK runs its Shop Small promotion, whereby a purchase of at least £10 at participating small merchants generates a £5 statement credit, once per registered Amex card per merchant per annum. Participating merchants include thousands of newsagents and convenience stores that sell mobile top-ups. By purchasing £10 top-up vouchers at multiple merchants with a UK-issued Amex card, your top-ups will be half price. This is a particularly cheap way of topping up on an annual basis if you maintain a UK SIM card in the long term. Although this top-up method is of limited practical benefit to non-UK residents, you can ask a UK-resident Amex customer to do this for you; they will be incentivised by Membership Rewards or airmiles.

SIM card validity
The four network operators (Vodafone, EE, O2 and 3) and most MVNOs have an expiry policy of 6 months (or 180 days) since the last balance increase or decrease. It's usually sufficient to receive a call every 6 months, because this generates revenue, albeit small, for the network, but you can't rely on this as it's not official policy with most networks. Most networks also operate a grace period after expiry, during which they will reinstate an expired SIM card including credit if you contact them; Vodafone openly states that its grace period is 3 months.

The expiry policy is shorter with some MVNOs, but similarly any balance increase or decrease suffices. For example, Lycamobile is 90 days; Lebara is 84 days; Vectone and Delight are 120 days, Anywhere depending on top-up for 30-360 days.

If you want to keep your SIM alive for a future visit, remember that you may face problems topping up from abroad; compare validity periods in this guide. Also, for visitors from outside the EEA, note that due to EU roaming FUPs, your SIM may be surcharged for EEA roaming on a future visit if you used it in other EU/EEA countries more than the UK on your last visit.

EE (formerly Orange and T-Mobile)
EE (originally called Everything Everywhere) was created in 2010 after the merger of Orange UK and T-Mobile UK to become the largest operator in the UK under the joint ownership of Orange and Telekom. BT (British Telecommunications plc) acquired EE in 2015/6. Some old devices show their network still as T-Mobile.

EE's 2G is on 1800 MHz, 3G/UMTS on 2100 MHz with the best coverage in the UK at 98%. They were the first to start 4G/LTE on 1800 Mhz to be follwed by 800 and 2600 MHz too: EE coverage map. In 2017 they added 2100 MHz. They have the best 4G coverage reaching 95% of population in 2016. 4G+ or double speed LTE is available in about 20 major cities so far.

Most reviews agree that EE has the best network with the widest coverage and highet speeds in the country. In benchmark tests EE is frequently the top scorer in the UK. This comes at the highest prices on the market.

Availability
EE sells triple-size SIM cards with 4G/LTE included. They call them pack and they are sold for 99p in EE stores and outlets: (Store locator) or online to be sent to an UK postal address for free. They don't have any credit, but you can get starters with a first pack included for the price of the pack.

As you need an UK-issued credit card to top-up online, it's better to buy top-up vouchers available all over the country. To top-up by card, text ETU followed by the voucher PIN to 150. To check your balance, dial 150 or text BA or AL to 150.

If you don’t call, text or top-up for 180 days, you will be disconnected and you’ll lose any credit on your account.

Combo feature packs
Their packs for voice, text and data SIMs all come with a combo of data, voice and text included valid for 30 days: To activate text code to 150, to stop or change packs, go online on your EE account. All packs auto-renew after 30 days, the £1 Data Pack after 7 days. Text 'STOP PACK' and 'YES' to 150 to disable auto-renew.

(*) The 16 GB package is limited to 15 GB in EU roaming, the 4 GB pack is exclusively available online and in selected stores.

(^) Includes Data Rollover

If you have used up any of your allowances, you can start a new pack early. Check if you have enough credit and then text 'NOW' to 150. They'll remove your current pack and replace it with a new one.

Still it might be a better idea to add extra data online as an add-on: Activation is online. These add-ons won't expire when the base package runs out, but can be used for the given period. For activation text code to 150. Other add-ons apply to old customers who have joined before September 2014.

Data-only SIM
For data use only and SMS EE sells their '4GEE WiFi SIMs' as prepaid or PAYG offer too. It's a mobile broadband SIM without voice that can be used for tethering, hence the name 'WiFi SIM', not a WiFi pass. These starters are sold online or in their stores with preloaded data: The total price for all of the validity must be paid in advance. For more data or months, one of these data add-ons can be activated online:

EU roaming
EE generally adopts "roam like at home" rules to all their pay-as-you-go allowances for EU roaming at domestic rates without restrictions. The Channel Islands, Isle of Man and Switzerland belong to their roaming zone without surcharges. A general max. of 15 GB roaming data per month applies.

More info

 * Tethering and VoIP are allowed; peer-to-peer is not
 * APN: everywhere
 * Website: http://ee.co.uk/

Vodafone
Vodafone in the UK has a good coverage on 2G (900 and 1800 MHz) and 3G (900 and 2100 MHz) nationwide and is rolling out 4G/LTE on 800, 2100 and 2600 MHz now: Vodafone coverage map. It covers about 85% of population by LTE in 2016 making it the 2nd best LTE network in the country, but their 3G is behind O2's.

Their 4G/LTE network is now accessible for prepaid customers on all plans.

Availability
Purchase a SIM card online to be sent to an UK postal adress or from any Vodafone store for free. Otherwise, they are sold for 99p in many supermarkets and news agents.

Recharge starting at £5 in their stores or many other kiosks or convenience stores throughout the country.

Vodafone accepts PayPal for online top-ups. That's how you can bypass the UK bank card scheme, but a bad conversion rate is given by PayPal. Some international credit cards also work for top-ups making Vodafone the most accessible operator to be funded by a payment system from out of the UK right now.

To check balance, enter *#1345# or dial 2345.

Vodafone has the longest validity of all network operators. They give you 180 days to show any activity plus an additional grace period of 90 days, before they'll shut you off.

This SIM needs to be activated by going online or calling 4354. Then you have to choose one of their Big Value Bundle schemes all valid for 30 days, which can be added by Data Freebees for more data.

Data default rate
Default rate is £2 per day for 50 MB and 10p per MB thereafter. You can add a package of 500 MB for £5 or buy a Big Bundle (see below).

Big Value Bundles
These combo plans are offered for 30 days: Allowances are valid in the UK and all over the EU/EEA plus some extra countries (see below) for roaming.

Internet overuse in the UK is charged with £1 per day for 25 MB, up to a maximum of 125 MB per day, then charged at 4p per MB thereafter. Unused data rolls-over to the next month, when it needs to be consumed.

If you need extra data, two add-on packages can be added to the Big Value Bundles:
 * 500 MB extra for £5 by calling 34441
 * 2 GB extra for £10 by calling 46205

Freebie Data
Vodafone gives you extra UK data for 30 days when you top up at least £10. These bonus data can't be used for roaming. Opt in by calling 4358 free from your Vodafone mobile before top-up. Freebie Data can't be obtained nor used when having subscribed to a Big Value Bundle.
 * £10 top-up: 500 MB reward + £10 credit
 * £20 top-up: 1 GB reward + £20 credit

Pay as you go £1 plan
In autumn 2017 Vodafone started a new £1 plan for occasional users. Under this plan you are charged 20p for 5 MB (and per text and min) up to a daily cap of £1. Having reached £1 on the day you get unlimited calls and SMS and up to 500 MB data. A day is valid from midnight to midnight of UK time. The same allowances are given out in EU/EEA roaming too (without 4G/LTE), based on the time zone associated to capital city of the roaming country. For extra data you can add once 500 MB per day for £1 by 2345. So the maximum data consumption is 1 GB per day on this plan.

New starters are sold on this plan already pre-activated or move from another plan by calling 41146, through your online account or app. You can migrate to and from this plan once per day for free. Thus you will lose all allowances like Big Bundles or any rewards. There is no base charge on days without consumption.

EU roaming
In May 2017 Vodafone adopted Roam like at home and all allowances can be used without surcharges for roaming in the EU/EEA. Vodafone offers the most international 4G/LTE roaming partners in the UK so far. Some additional countries have been included to their surcharge-free zone: Albania, Bosnia and Herzegovina, Faroe Islands, the Channel Islands, the Isle of Man, Switzerland and Turkey.

According to user reports 4G/LTE roaming is not possible on the new £1 plan that sticks to 2G/3G instead unlike the other PAYG plans.

More info

 * APN: pp.vodafone.co.uk
 * Website: http://www.vodafone.co.uk/

O2


O2 UK by Spanish Telefónica has good coverage nationwide using 2G on 900 and 1800 MHz, 3G on 900 and 2100 MHz and has started 4G/LTE on 800 MHz only: O2 coverage map.. It has opened all of its prepaid products to 4G/LTE.

It covers about 60% of the population with 4G/LTE in 800 towns in 2016, but has an obligation to reach 97% by the end of 2017. As it only uses the 800 MHz band, it focuses rather on wide coverage than on high speeds. So it gives a rather mixed picture, its 2G for voice and 3G is rather good, while its 4G patchy and slow.

Availability
The SIM cards are for free ordered online to be sent to an UK postal address or bought at their stores and outlets all over the UK for 99p. Standard, micro SIMs and nano SIMs are all available online via the O2 website. However, if a nano SIM is needed then you can use online live-chat function to specify the required SIM type to the agent.

Cashcards for top-ups can be found all over the country in any O2 shop or anywhere where you see the green top-up logo. Then call 4444 free from your mobile, enter the number on your receipt and follow the instructions. Top-ups are between £10 and £50. To check balance press *#10#.

Your voucher will expire after 12 months. Validity of the SIM is 180 days from the last activity.

They offer three prepaid product lines with voice, text and data: Classic Pay as you go, Big Bundles and International. Take care that plans come with an horrendous default rate of £3 per MB (except Classic Pay as you go), but shut-off having reached £1 (or 330 KB) per day. So buy bundles or bolt-ons from the start.
 * Classic Pay as you go: You need to top-up £10 or more per month to get the new cheap default rate of 1p per MB or can add Bolt-ons (for both see below)

Activation is online on your account or by calling 2202. Take care that you surf outside of these bundles at an excessive default rate of £3 per MB. This plan features low IDD call rates. You will get free bonuses for top-ups of £10 or more and can add Bolt ons (for both see below): To select or change plans go online or call 2202. For more data see bolt-ons.
 * Big Bundles: You need to top-up and choose one of the combo bundles (shown below) for 30 days as base plan. This can be added by Bolt-ons for extra data.
 * International
 * when you top up for £10 or more per month: 100 MB, 3000 O2 texts as bonus
 * when you top up for £15 or more per month: 200 MB, 3000 O2 texts, 3000 O2 mins as bonus

Bolt-ons
These data add-ons for extra data can be added to all prepaid plans with voice and are valid for one month: Bolt-ons don't auto-renew. Activation is online on your account or by calling 2202.
 * 500 MB: £4.99
 * 2 GB: £10.99
 * 4 GB: £16.99
 * 8 GB: £22.99
 * 12 GB: £30.50

Data-only SIM (called Tablet plans, iPad plans)
O2 sells prepaid data-only SIMs with no voice that are called Tablet plans or iPad plans. They come in all three sizes and in 3 different starter packs: For topping up these data SIMs the following top-ups are offered:
 * with 1 GB for 30 days: £8
 * with 3 GB for 90 days: £12.80
 * with 5 GB for 90 days: £20
 * with 12 GB for 90 days: £32

You are allowed to change plans as often as you like. Data lasts for the period and renews automatically thereafter. On O2's mobile data plans all European roaming is blocked.

Tethering
Possible on Android phones, but no official profile available for the iPhone.

EU roaming
O2 has generally adopted 'roam like at home' to all voice and data prepay plans with EU roaming at domestic rates. Note, that O2 generally doesn't offer any 4G/LTE roaming (except on O2 Germany) so far. Some destinations like the Isle of Man, the Channel Islands, Monaco or Switzerland have been excluded from their EU zone and are now only available on Travel Pay As You Go. For £1.99 a day, you'll get 100 MB data there. To activate this pass text 'TRAVELON' to 21300'''. '''Roaming is generally blocked on Mobile Broadband plans like the Tablet or iPhone Plans.

More information

 * APN : payandgo.o2.co.uk


 * User Name: payandgo


 * Password : password
 * Website: http://www.o2.co.uk/

3 (= Three) UK
3 (Three) is the runner-up of all 4 UK providers. While it has the smallest market share, it gained many customers by the most aggressive pricing. 3 is a 3G and 4G network-only with very limited voice/text fallback to EE 2G (at former Orange sites) in some low coverage areas.

3 coverage map. You need to have a 3G phone on 2100 MHz and for 4G a device that can carry 800 and 1800 MHz bands. 2G-only phones simply don't work on Three. Coverage can be worse in the countryside compared to the three other UK networks, unless you have a handset that supports Three's VoLTE. Coverage in urban areas can be better than prepaid with the other networks, because Three supports wifi calling on prepaid with many handsets (including iPhones), meaning that you get coverage in London Underground (Tube) stations for example.

Three launched 4G/LTE services in 2013. It covers about 60% of population with 4G in 2016, giving Three less coverage, but growing fast. Where you can find 3, it offers good speeds at quite low rates. In network tests, it frequently gets higher scores than O2 in spite of lacking 2G.

Three offers one of the most extensive coverages for roaming at domestic rates, not only in the EU but some other countries too, called 'feel at home' (see below).

Their SIM card is given out for free, either online or in their stores. It stays valid for 6 months without any activity. Take care, that they have different products which shouldn't be mixed:
 * Pay-as-you-go SIMs for phones
 * Mobile Broadband plans for tablets and modems

Pay as you go on Three
This product is for smartphones only and doesn't include tethering. They sniff hotspot use by DPI and block it, if detected. For tablets and modems better choose the Mobile Broadband offer instead.

Default rate
Very low 1p per MB (that's £10 per GB), valid in the EU/EEA too.

Data feature packs
These daily or monthly add-ons are offered to the smartphone PAYG plans:
 * internet daily pass: 120 MB for 24 hours: £0.50
 * mobile internet pass: 500 MB for 30 days: £5
 * all-in-one-10: 1 GB for 30 days at £10 (with 3000 domestic mins and 3000 dom. texts)
 * all-in-one-15: 5 GB for 30 days at £15 (with 3000 domestic mins and 3000 dom. texts)
 * all-in-one-20: 12 GB for 30 days at £20 (with 3000 domestic mins and 3000 dom. texts)
 * all-in-one-25: 30 GB (up to 12 GB in EU roaming and a surcharge of 0.5p/MB applies beyond) for 30 days at £25 (with 3000 domestic mins and 3000 dom. texts)
 * all-in-one-35: all-you-can-eat data (1 TB FUP applies in the UK only, 12 GB in EU roaming and a surcharge of 0.5p/MB applies beyond) for 30 days at £35 (with 3000 domestic mins and 3000 dom. texts)

When data is used up, you are free to buy another pack without waiting until the end of the previously bought add-on pack. After data add-on is used up, charges revert to the £0.01 per MB default rate, if another add on isn't bought.

Availability
Purchase for 99p in a store (supermarket, news agent etc.), also available online to be sent to an UK postal address.

Extra credit can be bought from anywhere displaying the green 'top up' logo. Vouchers are available for £10, £15, £20, £25, £30 and £50 and must be activated within 90 days of purchase online or by calling 444. Credit never expires on Three SIMs, but your SIM plan can be terminated, when there is no activity for more than 180 days.

Mobile Broadband
Their Mobile Broadband prepaid SIM is a data-only SIM with text but no voice calls for tablets, modems or routers. You can use it in smartphones too, to circumvent their tethering restrictions (see below). They are often sold as ready-to-go kits with data volume pre-loaded:
 * SIM card with 3 GB data valid for 3 months: £16

You can top-up online on your My3account with these data packages:
 * SIM card with 12 GB data valid for 12 months: £40
 * SIM card with 24 GB data valid for 24 months: £60
 * pay-per-day: 500 MB for up to midnight on the next night: £2.99
 * 1 GB for a month: £10
 * 3 GB for a month: £15
 * 7 GB for a month: £25

Data Reward SIM
In 2016 Three introduced their new "Data Reward SIM" to match the offer of FreedomPop (see below). It's aimed at tablet and modems, but contains voice and texts too. So there seem to be no restrictions where to use it whatsoever. When registered, the "Data Reward SIM" gives 200 MB high-speed data every month for free. This volume doesn't roll over, but can be used on their "Feel at Home" (see below) roaming option too. The cycle depends on the day of activation. The "Data Reward SIM" can be added with these monthly bundles booked through your account: All usage outside of these packages is at very low 1p per MB in the UK and 3.6-4.3p per MB in 'Feel at home countries'. You can register a maximum of 5 Data Reward SIM cards on your name.
 * SIM card with 1 GB valid for 30 days: £10
 * 2 GB: £15
 * 5 GB: £20
 * 10 GB: £25

Roaming: 'Feel At Home' option
Their roaming option dubbed 'Feel At Home' is available to all Pay-as-you-go and Mobile Broadband SIMs of Three UK and is valid in about 60 countries and territories, including all of the EU/EEA, Australia, Brazil, Hong Kong, Indonesia, Israel, Macau, New Zealand, Singapore, Sri Lanka, Switzerland, USA (on both AT&T and T-Mobile networks), Channel Islands (Jersey & Guernsey) and the Isle of Man. From 2017 Vietnam and these Latin American countries are added: Costa Rica, Colombia, Chile, Guatemala, El Salvador, Panama, Peru, Guatemala, Uruguay.

Three misleadingly advertises that Feel At Home applies in "71 destinations" because it double-counts parts of Finland, France and Spain as separate "destinations". Despite this double-counting, Three offers 3G roaming at domestic prices in more countries and territories than any other UK network.

Feel At Home applies when roaming in any of these countries or territories with a Three UK SIM card and means that data is charged exactly the same like domestic data in the UK without roaming surcharges. More info about the pros and cons of their roaming offer in the European Union section of this Wiki at Euro3. Note, that Three doesn't offer 4G/LTE roaming so far and their tethering restrictions apply like in the UK.

Furthermore, you can't use it for more than 4 months (2 months outside Europe) of continuous roaming and only up to 12 GB per month or will be charged at 0.5p per MB otherwise. Using their PAYG rate of 1p/MB instead of a bundled rate, the same 1p/MB is charged in the EU/EEA up to a limit of £42 (or 4.2 GB) when roaming will be cut off to avoid excessive bills.

Tethering
Tethering is officially banned on any prepaid SIM card of Three. On their "Pay as you go" product, Three verifies if you use it on a smartphone by TTL detection; tablet and modem use is banned, as well as tethering to it. On their "Mobile Broadband" product, tethering is only officially banned, but not blocked. This means that you won't receive a profile to use it for tethering on an iPhone. Tethering from Android devices still works, on roaming too, no matter what Three sales reps. are telling you.

More info

 * APN: three.co.uk
 * Website: http://www.three.co.uk/

giffgaff
Giffgaff is a wholly owned subsidiary of O2 UK, and operates as MVNO on O2 UK (for technical info check O2 above). 4G/LTE is provided at no additional cost.

Availability
Giffgaff SIM cards can be ordered in four ways. You will receive £5 free credit upon activation if you are introduced by an existing giffgaff member, and in some cases the introducing member also receives some free credit. In some UK stores like Tesco they are sold at the checkout register for 99p.

Registration
To activate your SIM on their website, you ideally need a credit or debit card, otherwise you can credit your account with a top-up voucher from convenience stores, supermarkets and petrol stations. Since December 2016, giffgaff have officially supported non-UK credit and debit cards. Giffgaff or original O2 reload cards both work. As a last resort you can also buy top-up vouchers online at private facilitators like mobiletopup.co.uk for a surcharge.

Check your balance by dialling *100#.

Your SIM card stays valid for 6 months after any of these activities: an outgoing call (including to free 0800 numbers), SMS or MMS, at least 4 incoming calls (of >10 secs), a data connection, a top-up or receiving "payback" in early June or early December for introducing new members or posting in giffgaff's forums.

Data feature packs
Default rate is 5p per MB. They offer one package for data-only: All these following bundles come with included calls, texts and a data volume, valid for one month: (*) = all calls amongst giffgaff numbers are free.
 * £5: 500 MB for a month

(^) = first 9 GB each month at 4G speeds, then throttled at 384 kbps from 8am to midnight.

Check balance in packages by *100*7#. Packages must be activated online through your account.

Tethering
Tethering is allowed on the bundle that has unlimited data included but is limited to 6 GB. It's allowed on the other bundles, and limited to the data plan of each particular bundle.

EU roaming
All plans include data, minutes and texts to all the countries in the EU/EEA without any extra cost. Take care that no 4G/LTE roaming is available and roaming on the Channel Islands and the Isle of Man is now charged at £0.20 per MB. For roaming you need to have activated your SIM in their UK network first.

More infomation

 * APN : giffgaff.com


 * Username : giffgaff


 * Website: http://www.giffgaff.com

Virgin Mobile


Virgin Mobile is a MVNO that operates on the EE network on 2G and 3G, no 4G/LTE for prepaid so far, only for their postpaid plans.

Availability
Virgin mobile SIMs cards can be ordered online for free or in shops e.g. the Virgin Megastores (store locator) for 99p. SIMs are also sent to hotel adresses in all three sizes. They stay valid for 180 days without any activity.

Default data rate
The starter tariff has a default data rate of £2 per 200 MB.

Data feature packs
You can buy these packages, called "JAM pack", all valid for 30 days: To activate, send SMS to 789789, text Buy for example: Buy JAM 15. It will auto-renew after 30 days. To change plans, send SMS to 789789, text Change. To deactivate a plan, send SMS to 789789, text Cancel.

Tethering
Tethering (at least on Android phones) and VoIP is possible and allowed.

EU roaming
With Roam Like Home, you can use your mobile wherever you go in the EU and pay no more for your texts, data and minutes than you would in the UK, subject to their fair usage policy. This FUP states that a monthly data cap is in place. If you use more data than the monthly cap allows they may apply a surcharge. It is not made clear what this cap is for each plan. This applies to all data above the amount that can be purchased at the current EU data wholesale capped rate with the credit you have on your account at the point of roaming.

More information

 * APN: goto.virginmobile.uk
 * Website: http://store.virginmedia.com/virgin-media-mobile.html

Tesco Mobile
Tesco Mobile is the MVNO of Britains leading retail chain operating on the O2 network. From 2014 Tesco Mobile has allowed all customers on the O2 4G/LTE network. From 2016 they now offer two different plans:
 * Triple Credit and

Both tariff lines can't be mixed, but switched online or by calling customer support at 282. You will loose all credited allowances when changing plans.
 * the new Rocket Packs.

Availability
Their SIMs can be ordered online for free or can be bought in Tesco Megastores: Tesco store locator for 99p.

You can top-up with e top-up cards or by voucher from any Tesco store available from £10 to £50. To top-up by voucher, call 4444 for free. Check balance by calling 282.

You need to use your SIM every 180 days to keep it alive.

Triple Credit plan
On the Triple Credit tariff you get free credit when you top-up. For a £10 top-up you get £30 credit, for £15 £45 and for £20 £60 worth of credit. Furthermore, you can book data-only packages from your main credit.

Default rate is £ 0.10 per MB. They offer these monthly packs for Triple Credit plans valid for 30 days: For activation, text code to 28948. Overuse is charged at the default rate (see above), all packages auto-renew after 30 days, to stop them from doing so, text STOPDATA to 28948. To check balance in packages, text BALANCE to 2112.

There are severe restrictions for the bonus credit given out for Triple Credit you should be aware of
 * only the 1st top-up per month will be awarded triple credit
 * you can't book data bundles for the bonus credit, only for the original credit. Data will be only on their default rate of £ 0.10 per MB for the bonus
 * the bonus credit is only valid for 1 month, while general credit stays valid for 6 months
 * if you top-up £15 or more in one go, you can choose a free 500 MB bonus pack

Rocket Packs
Their new combo package plan has been introduced in 2016. This is a different plan or tariff line that can't be mixed with Triple Credit. You can only book these combo packages for 30 days: All call and text allowances are domestic except for the EU roaming promotion (see below). For activation go online or text code to 28948. All packs can be renewed ahead of time. Overuse fee is £0.10 per MB, but no data-only pack can be added. To check balance in packages, text BALANCE to 2112.

EU roaming
Data and calls and texts while roaming within the EU/EEA will come out of your UK monthly allowances, free credit or bundles without extra cost. Note that Jersey, Monaco, Guernsey, Switzerland and the Isle of Man have been excluded from the zone and there is no 4G/LTE roaming.

More information

 * Tethering is allowed
 * T&Cs don't allow P2P, VoIP, continous streaming and tethering
 * APN: prepay.tesco-mobile.com
 * Username: tescowap
 * Password: password
 * Website: http://www.tescomobile.com/

ASDA Mobile
ASDA Mobile is the MVNO of Tesco's biggest rival as retailer called ASDA. It used to operate on the Vodafone network. In 2014 they migrated to the EE network (see EE above). Compared with Tesco, it has the better coverage on 3G, but lacks 4G/LTE in the cities so far. For spring 2017 4G/LTE access has been announced for ASDA mobile due to a new wholesale agreement with EE.

Availability
ASDA Mobile SIM cards can be bought online on their website or in many ASDA supermarkets and grocery stores throughout the UK: store locator for 50p. They stock hybrid mini/micro and nano sizes.

You can top up at any ASDA store or anywhere you see their logo with a top-up voucher. To check your balance, text 'BAL' to 2732.

ASDA Mobile has the longest validity of any MVNO in Britain. You will need to use it within 270 days, but it can be revived by a top-up for up to a year.

Combo and Data Bundles
Default data rate ouside of bundles is 5p per MB. These bundles can be added: All packages are valid for one month and will auto-renew after 30 days. To stop, text "STOP AUTO" to 2732. Overuse and out of bundle fee is at the default rate (see above).

EU roaming
If you have a bundle, you can use it as you would do at home, as long as you're in one of the EU/EEA countries including the Channel Islands, the Isle of Man, Switzerland, Monaco and Andorra.

More information

 * Tethering is allowed
 * APN: everywhere
 * Website: http://mobile.asda.com

Lebara mobile
Lebara mobile is one of UK's leading ethno market providers operating on the Vodafone network (see above) on 2G and 3G only, no 4G/LTE.

Availability
The SIM card can be bought online to be send to an UK postal address, from eBay.co.uk or other suppliers delivered worldwide or offline in the UK at stores for free or 99p.

They give 50% free credit with your first top-up. Online you may use PayPal for top-ups starting at £5. Offline you can buy scratch cards. To top-up by voucher, enter *#1345* #. To check your balance, type *#1345#.

Lebara has very rigid deactivation rules. Without having used it for 84 days, it will be switched off and your credit and number will be lost.

Default Data Rate
15p per MB is charged, if no data bundle is booked or all data are used up.

Data feature packs
Their data packages are valid for 30 days. For activation text code to 38885: You may only have one data pass active at any time. If you consume all of your data allowance, you will be charged the default rate or can buy an add-on. Data passes auto-renew on expiry. If you don’t have sufficient credit, Lebara will try to auto-renew for seven days or until you cancel auto-renewal. To cancel auto-renew text WEB *STOP to 38885 or opt out via your MyLebara account.
 * 500 MB: £5, activation: 'WEB500'
 * 1 GB: £7.50, activation: 'WEB1GB'
 * 2 GB: £10, activation: 'WEB2GB'

Lebara offers a so-called "bolt on" for extra data when the original package is used up: For activation text code to 38885. Be aware, that a bolt-on is only valid for the rest of running time of the original package.
 * 1 GB: £7.50, activation: '1GB'

EU roaming
You can use your mobile in the EU as if you were in the UK at no extra cost. You may use you mobile data in the EU/EEA up to 2.5 GB during the validity period of your bundle. After this threshold you will be charged £0.007/MB in the EU and £0.006/MB in the EEA until the renewal of your bundle.

More infomation

 * Tethering is banned
 * APN: uk.lebara.mobi
 * Username and password: wap
 * Website: http://www.lebara.co.uk/

Lycamobile
Lycamobile is the main competitor of Lebara on the ethno market. In the UK it's a MVNO on the O2 UK network in 2G, 3G and 4G/LTE.

Availability
The SIM is sold online to be sent to an UK postal address or offline at their stores and outlets for free or 99p.

There and in many other stores, you'll find their top-up vouchers. To top-up by voucher, enter *131*#. Check balance by *131#. Credit expires after 90 days and your SIM card will be suspended after 120 days only without a recharge.

Default Data Rate
9p per MB charged, if no data bundle is booked or used up

Data feature packs
These packages are all valid for 30 days: Lycamobile will automatically renew your bundle once it expires. Charge for the bundle will be deducted from your main balance at the time of auto-renewal of the bundle. To cancel the auto renewal dial *190# before the expiry date and follow the instructions or call customer service for free on 353 before the expiry date. For more data, these bolt-ons are offered, valid for the running time of the base package:
 * 500 MB: £5, activation:*139*5001#
 * 1 GB: £7.50, activation: *139*7001#
 * 2 GB: £10, activation:  *139*1001#
 * 3 GB: £12.50, activation: *139*1201#
 * 200 MB: £3, activation: *139*601#
 * 500 MB: £5, activation: *139*602#
 * 1 GB: £7.50, activation: *139*603#
 * 3 GB: £12, activation: *139*604#
 * 5 GB: £20, activation: *139*605#

EU roaming
Lycamobile in UK doesn't give out its regular data packages for EU roaming. Instead they charge 9p per MB in the EU. They have released six monthly combo plans with an EU roaming allowance: (*) -  These packages are discounted by 50% when you purchase them for the first time with a new SIM card.

UK regulator Ofcom has opened an investigation into Lycamobile to assess whether the provider complies with the EU regulation. In particular, it will assess whether the operator has failed to meet its obligations by levying surcharges, enforcing fair-usage data roaming limits lower than the minimum level required and expecting SIM cards to be first used in the home country as a control mechanism.

More info

 * Tethering / mobile hotspot use is banned and blocked
 * APN: data.lycamobile.co.uk
 * Username: lmuk (that's lowcase L, not capital I)
 * Password: plus
 * Website: http://www.lycamobile.co.uk/

Vectone Mobile
Vectone Mobile is a MVNO using the EE network on 2G and 3G only, no 4G/LTE so far (see above).

Their SIM can be purchased online or in many supermarkets, petrol stations and kiosks throughout the UK. Mini and micro SIMs are free or 99p, but nano SIMs need to be ordered online for £1.

Top-ups are in shops like Tesco and Sainsbury's, petrol stations like Esso and BP, post offices, Payzone and Epay using multifunction voucher. Topping up online, you can use Paysafecards that are sold in many countries. Only online you get data bonuses for recharges: top-up £5 - 1 GB for 7 days, top-up £10 - 3 GB for 15 days and top-up £20 - 10 GB for 30 days.

Check balance by *102#. Credit stays valid for 90 days and the SIM card will be suspended after not having used it for 120 days.

Default data rate

 * 9p per MB. A minimum balance of 50p is required to use data.

Data feature packs
Data pack will be auto-renewed once the validity expires. To opt out, call customer service enter *1122#. Overuse is charged by the default rate. Check allowances in packages by *1252#.

EU roaming
Vectone Mobile has chosen to disobey EU regulations and only gives out EU roaming at the same 9p per MB standard rate as in the UK. All allowances in data packages stay domestic only and can't be used for roaming.

More infomation

 * APN: webuk.mundio.com
 * Tethering is allowed. Data can't be used on BlackBerry phones.
 * there are lot of complaints on the internet about Vectone's poor customer service
 * Website: http://www.vectonemobile.co.uk/

Delight Mobile
Another very similiar MVNO from the same group is Delight Mobile operating on EE's good network in 2G and 3G only, no 4G/LTE.

Availability
You can get a Delight Mobile SIM card by ordering a starter pack online or from the many shops showing the Delight Mobile sign. The starter pack is free, but you will need to top-up to start making calls.

To top-up online you may try Paysafecards from abroad. Top-up vouchers can be bought in the UK at Esso or Total petrol stations, Sainsbury's and Spar, supermarkets, Costcutter, WHSmith, PCWorld, Dixons, Wilkinson. To top-up by voucher, enter *191*#. Check balance by *192#.

Data feature packs
Standard rate outside of packs is a very low 1p per MB. These monthly packs are available: To check the remaining bundle units in your internet bundle, dial *1102#. All packages auto-renew, to unsubscribe dial *1103#. If you exceed your units limit, you'll pay default rates. You can renew your bundle only after the end of your bundle validity period.

All-in-one packages
These "Delight Bundles" with calls, texts and data valid for 30 days are offered. To check your data balace, type *1100#, to suspend auto-renewal type *1104#.

EU roaming
Roaming is at domestic rates in all EU countries. You can use the default rate of 1p per MB and packages.

More information

 * APN: webuk.mundio.com
 * Website: http://www.delightmobile.co.uk

iD Mobile
iD Mobile is a MVNO using the Three network in 3G and 4G/LTE (for specifics see Three above). It's owned by Carphone Warehouse and was launched in 2015. First, they only sold contracts, but in 2016 PAYG was added and their SIM cards finally offered in Carphone Warehouse branches. Their rates are very similar to Three's.

Availability
An iD Mobile PAYG SIM can be bought through their website or over the phone using a UK-issued debit or credit card or you can go to any Carphone Warehouse store in the UK (locator). Their SIM is free for the price of the first included package. If you don't select a bundle, you'll need to top-up at least £5 for a start.

Top-ups can be made online on your account using a UK credit/debit card. If you don't have one, you need to top-up at any Carphone Warehouse branch starting from £5. This seems to be a major disadvantage to Three which has many more top-up locations in the country. Furthermore, iD mobile's top-ups are only valid for 90 days and the SIM card will be discountinued after 365 days of inactivity.

Default rate
Their data PAYG rate outside of packages is a low 1p per MB. A rate that is only matched by Three right now.

Combo plans
For bundles iD mobile only offers 3 combo plans with data, minutes and SMS for a month: For overuse, their default rate applies. You can make the bundles once-off or recurring in your account.
 * £5: 100 MB, 125 mins, 500 SMS
 * £10: 1 GB, 500 mins, unlimited SMS
 * £15: 4 GB, 1000 mins, unlimited SMS

EU roaming
The minutes, texts and data you use for roaming in the EU/EEA come out of your monthly allowances at domestic rates. The Channel Islands and the Isle of Man are included, but no 4G/LTE roaming is offered so far.

More info

 * Tethering / mobile hotspot use is banned
 * APN: id
 * Website: http://www.idmobile.co.uk/- only accessible with a UK IP address

FreedomPop
FreedomPop is a new US-based MVNO which started in 2015 on the Three network in 3G and 4G/LTE (for coverage see Three). The UK was their first commercial launch outside of the US with their new business model called Freemium. They give out a small amount of data, calls and texts for free in hope that you buy more allowances later. FreedomPop plans to bring its service to other countries within the next years.

Availability
Their SIM card can only be ordered online to be delivered to an UK postal address only. There are plans to sell it in stores, but they have not turned up yet. This makes it inconvenient for travellers, but as an exception we list online-only operators when they give out data for free. The SIM card however is sold for a price: £6.99 for start-up and UK delivery.

They started commercial operations in the UK in September 2015 and need to work on their 250,000 customers on the waiting list. So you can also expect some waiting time.

Every SIM card is linked to a credit or debit card for payment and top-ups. Non-UK issued cards are accepted.

Free allowances
In every month 200 MB data, 200 domestic SMS and 200 domestic minutes are given out for free. Data overuse is charged at 1.5p per MB on the free plan. You can also earn more free data by taking part in third-party offers like filling in a survey or downloading a coupon.

Combo packages for pay
These additional monthly bundles can be added: Extra data as overuse for pay plans is 1p per MB, instead of the 1.5p/MB on the free plan.

You can roll over unused data to the next month for £1.49 per month. A maximum of 500 MB can be rolled over and a maximum of 20 GB can be stored.

Restrictions
Beware of a few catches. You should immediately turn off "auto top-up" on your online account, which is turned on by default. Here is why: All calls are routed via VoIP. This means that you need to have a stable and pretty fast data connection to make calls. This is a service, that Three is not always renowned of and beta testers have been critical of the sound quality. For classical voice telephony you'll pay another £1.49 per month for their "premium voice add-on".
 * They will automatically top-up your account by £10 of credit when you’re within 100 MB of your download allowance. This means you’re only able to use 100 MB without paying anything extra using auto top-up.
 * As payment details are held on record and used automatically for when you incur additional charges, it’s very easy to accidentally run up a bill by surprise. If you’d like to receive a notification when your allowances have been used up, they charge an extra 99p per month for this service.

More info

 * APN: three.co.uk


 * Website: http://uk.freedompop.com

Anywhere
Anywhere is one of UK's multi-network operator. It operates on the networks of Three, O2, EE and Vodafone (depending on the plan).

You will pay much more for having the combined coverage of three UK networks at a very limited validity of your credit.

Availability
The SIM card can be bought online to be send to an UK postal address, from argos.co.uk, from Sainsbury's and some other shops. Two different tariff lines are offered that can't be changed: Pure and Plus+.

The starter pack includes the sales price as credit. Pure SIM cards range from £10 for one month to £60 for a year. Plus+ SIM cards from £10 for 30 days to £180 for 180 days. You will need to enter an UK address for activation.

Top-ups can be made online via credit card or by calling 333. Better check before, if your non-UK credit card is accepted. You wont find any option to buy reload vouchers locally. Be also aware of their limited validity. There are top-ups from £10 credit for one month to £60 for one year. To check balance, dial 222.

Pure
This plan operates on EE, O2 and Vodafone's 2G and 3G network, no 4G/LTE so far. It hasn't any data plans, but charges at a flat 10p rate per MB (equal to 1 GB = £102).

Plus+
This plan operates on EE's, O2's and Three's 2G, 3G and 4G/LTE networks. It includes unlimited calls, SMS and 4 GB data for 30 days at £30. This bundle auto-renews.

EU roaming
Data, calls and texts while roaming within the EU/EEA will come out of your UK monthly allowances, credit or bundles without extra cost.

More information

 * Tethering is allowed
 * APN for Pure plan: mobiledata
 * APN for Plus+ plan: Anywhere
 * MMS doesn't work!
 * Website: https://anywheresim.com/

CTExcel
CTExcel is the brand name used by China Telecom for its MVNOs operating outside China. Unlike Chinese SIM cards, there is no censorship on this SIM. While they target Chinese in particular, anyone can sign up for a CTExcel SIM. In the UK, they use the EE network.

As a rarity among EE MVNOs, they allow to use the 4G/LTE network too for a one-time surcharge.

Availability
Their primary way of distributing SIMs is by mail; they can be ordered online to be sent to any UK postal address with an initial top-up required. If you choose to purchase a SIM in this manner, you will receive an e-mailed activation code that you must type into the CTExcel website to activate the SIM once it has arrived.

They also have a network of sales partners that sell their SIMs (list of outlets). Note that some partners also carry their "Europe SIM", which is their product intended for EU roamers; prices are not particularly good for that product, so it won't be mentioned further. They are primarily Chinese supermarkets and travel agencies, with the exception of SIMLocal at Heathrow Terminal 3 Arrivals.

Top-ups can be done at any PayPoint or Payzone-supporting merchant while in the UK, as well as online with any international (not only UK-issued) Visa/Mastercard or PayPal from inside or outside of the UK.

CTExcel operates a 90-day expiry policy. If you don't use your SIM (topping up the SIM doesn't count) for 90 days, it will expire. As it roams in most countries, a roaming SMS at least every 90 days is recommended to keep it active. Alternatively, they offer a keep alive service at £1 per month

They will charge a one-time £2 fee for an LTE-capable SIM, or to upgrade a previous 3G SIM to an LTE SIM. All bundles ordered on that SIM will have LTE as long as the SIM remains valid. The free SIM option does not include LTE.

Data feature packages
Default data rate is 5p per MB. They have three types of bundles, depending on what you need. All stand-alone bundles are valid for 30 days, while add-ons are valid until the end of the base bundle.
 * Super Value combo
 * £7.50: 300 UK minutes, unlimited text, 400 MB data, text UN75 to 888 to activate
 * £11.90: 500 UK minutes, unlimited text, 2 GB data, text UN119 to 888 to activate
 * £20: unlimited talk/text and 6 GB data, text UN20 to 888 to activate


 * Call-Home combo
 * £16.90: 1200 Greater China minutes, 1000 European minutes, unlimited text, 3 GB data, text UN169 to 888 to activate. Greater China is defined as mainland China, Hong Kong and Macau.

These add-ons can be applied to an existing bundle for extra data; they can't be purchased on their own:
 * Data-only pack
 * £5: 600 MB data, text DA5 to 888 to activate
 * £10: 3 GB data, text DA10 to 888 to activate
 * £5: 600 MB data, text AO5 to 888 to activate (only letter O)
 * £8: 1024 MB data text AO10 to 888 to activate (first letter O, then number 0)

EU Roaming
CTExcel allows "roam like home" in Switzerland, Monaco, the Channel Islands, and the Isle of Man as well as the EU/EEA, debiting all usage from domestic allowances.

More infomation

 * APN: tslpaygnet
 * Website: http://www.ctexcel.com

Mobile by Sainsbury's
The supermarket chain Sainsbury's suspended the Mobile by Sainsbury's service in January 2016.

Post Office Mobile
The UK Post Office closed down a shortlived attempt to build a UK mobile phone network service as its offering was unable to compete in the crowded British mobile telecoms market.

Talkmobile
This Vodafone MVNO closed down at the end of August 2017.