S25+ unable to access apps with a weak signal

[lobster112]

On my 3rd day trying to get this phone to work. Can't connect to Google, can't use Gemini, can't use the microphone & so on. can't get through to Samsung support, even chat. 

I know the T-Mobile signal is weak but my S22+ works here. Tried turning off mobile signal to force phone to a strong wi-fi, but phone would not default to WiFi.

[Rostyslav]

Same problem with s25 ultra

[lobster112]

Returning S25+ & had T-Mobile re-activate my S22+. No 5G signal here but at least almost every thing works. I liked the s25+, just wish it would work.