I used Tmobile while living internationally for 3 years and it worked like a charm. Data was slow but was enough for things like Google maps. If you give in an

I used Tmobile while living internationally for 3 years and it worked like a charm. Data was slow but was enough for things like Google maps. If you give in and get a UK sim, you could look into ‘parking’ your number. Some carriers offer this service. There are also some third-party ‘park your number’ services though I haven’t used them myself.