I got a Umidigi A5 pro ti summer it's good for my needs but the camera sucks and i've been told the it's other models camera suck as well. It's my first purchase from that brand and it was cheap so worth a try for me. Its not my primary phone just the first china phone i'm using.
Maybe look into the Realme brand or another Xiaomi USA band compatible phone.
¿Will Xiaomi Mi 9T work in USA?
i would consider B2,B12 & B11 to be very important for t-mobile coverage. get a phone that supports at least
all those three bands if you don't want cell coverage to suck.
edit:
actually i think B2 and B4 are significant ones.. i'll have to find confirmation.