Talk:Network compatibility of devices/@comment-92.236.69.82-20151010104235/@comment-24682153-20151010105600

As you have a new state of the art smartphone it will work flawlessly in the US in 2G, 3G and 4G/LTE: 2G bands GSM 850 / 900 / 1800 / 1900 3G bands HSDPA 850 / 1700(AWS) / 1900 / 2100 - G928T, G928A HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 - G928I 4G bands LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 20(800) - G928T LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 12(700), 17(700), 20(800) - G928A LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 17(700), 18(800), 19(800), 26(850), 28(700), 40(2300) - G928I

You don't need to buy a new SIM for the US because of the frequencies your phone is covering. This will not change with any SIM. But you should be aware of very high roaming charges from UK in the US. O2 UK will charge you on their standard US rate £6 per MB in the US using roaming data.

You may think of getting a Three UK SIM before you leave and will have data for the UK domestic rate, see Euro3