UBports UT Pinephone and Sim Cards
I went out and bought a Simply Mobile (powered by T Mobile) Keep Your Own Phone Sim Kit for a dollar. I then purchased a 50$ SimpleMobile 30 day plan.
All worked fine.
For fun I tried to do the same thing with the Straight Talk bring your own phone plan.
This "provider" has three sim cards in the kit. The phone wouldn't recognize either the AT&T or Verizon Sims, but the T Mobile Sim worked fine.
Sure would be nice to be able to use the bigger networks of AT&T and Verizon.
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@planejoe You can use AT&T network via Red Pocket, or Verizon network via Red Pocket or US Mobile. But, UT is not working for calls with Verizon network. So, you will only get LTE data.
@rocket2nfinity Concur, Red Pocket works for AT&T although even after trying various APN configs, it seems to be stuck on 3G.
Other than that, text without pictures works, phone and internet all functional.
Thanks for the tip!
@planejoe You must be in a weak reception area. I get 4G