We were on T-Mobile, but had so many problems that we switched back to Verizon a year ago.
My iPhone has good satellite comms (text only) when it is out of range of cell towers. I use GaiaGPS and download maps before I head out to a new place. I also carry a power bank for extended power for the phone. It all works well together.
“We were on T-Mobile, but had so many problems that we switched back to Verizon a year ago.”
We have no problems with T-Mobile,
Works great in Europe, Asia and other places. Free texting and slow internet. Calls 25 cents a minute.
I usually sign up for a 30 day $50 plan for free calls and faster internet. Then my phone becomes a hot spot.