Talk:European Union/@comment-31216203-20190823101525/@comment-24682153-20190823110635

To present evidence of "stable links" to a country e.g. to have international roaming enabled is rare, but enforced in some countries by some providers. For instance in Austria and Slovenia it's done like this (Magenta, Telering, bob, Slovenje Telekom, IZI etc). In Austria you need to present a supplier's bill, a student card of a local university, a registered address, local bank account or similar. In some other countries like in the Baltic States internatl. roaming may be blocked for all customers regardless where they come from.

The "stable links" prerequisite is not based on a national legislation or directive but comes out of the EU roaming regulation that allows such measures to ensure that the offer is not "misused" by permanent roamers. As laid out in the text roaming is not regulated anymore by national policies, but by this EU regulation which is again implemented very differently in the member states.

Roam like (at) home is (per definition) only offered to temporary visitors abroad (so there may be time limits) who have "stable links" to the home country of the SIM card. That's why it's legal according to this regulation to limit e.g. data roaming to (permanent) residents of the issuing country (of the SIM).

As I've said implementation of this policies still differs immensly and is added for each provider on each country's article.