I was forced to switch my carrier from att to T-Mobile. I have an factory unlocked att HTC one. When I put my new tmobile SIM in the voice works but the data doesn't even though the screen displays 4g at the top. I messed around with all the settings at #*#*info*#*# and it still doesnt work. In setting, mobile data says it is disconnected when not connected to wifi, when connected to wifi it says that it will use network date when WiFi unavailable.
I have looked through this forum for answers but cannot find anything with this issue. Any help is greatly appreciated.
I have looked through this forum for answers but cannot find anything with this issue. Any help is greatly appreciated.