How do i make my att sim work with us cellular lg g flex 2

[AC Question]

I put my att Sim into a us cellular lg g flex 2, I have internet but can't call or text. Help please

 

[B. Diddy]

Welcome to Android Central! US Cellular is a CDMA network, and their variant of the G Flex 2 does not support GSM (which is what AT&T uses for voice calls). LG G Flex2 (CDMA) Specs, Features (Phone Scoop)