@mario-ch honestly this thread just confused me. My issue is with sms not calling. The calling appears to work fine. And someone said in the thread that T-Mobile supports voLTE anyway. So I don't really know what to make of not being able to receive texts (I can send them no problem) with T-Mobile. Has no one been able to receive texts on this carrier?

@mario-ch thats too bad. Is there a device you know of that is somewhat recent and will run well on T-mobiles US network?

Ive been using a pixel 3a with UT as a daily driver for about a month now, and ive been able to deal with its compromises and bugs except for the fact that I cant recieve texts, which is a dealbreaker. I tried to change the apn settings but that does nothing. I found a work around by routing my texts through axolotl but even that stopped working. So i am looking to try another device before i give up on UT, because i like it and want it to work.
Seems like the xperia X is a somewhat recent device where just about everything works out of the box. All the important stuff anyway. My question is if anyne has tried it with T-mobile US carrier? If so, does calling and texting and mms work? Would like to hear feedback before I purchase. Thanks!