I've been using T-Mobile since 2019. the additional $50/mo for International plus is hard to beat. Unlimited talk/text and 15G data. Works flawlessly all over Europe, N. Africa and Turkey for me. This year when I was over there for 3 months in the Czech Republic, it got a little spotty, and calls from people in my phone would show from Romania and other countries. Not sure if it had anything to do with what is going on farther east. YMMV