I bought a used HTC M8 from a friend but his phone is a Verizon Unlocked phone. I pop my AT&T sim which it is working but I try to change the APN setting by adding AT&T to it but it would not allow me to add or remove APN setting.
I bought a used HTC M8 from a friend but his phone is a Verizon Unlocked phone. I pop my AT&T sim in it and i found that I got signal and H data. So I just wanted to make sure that if I pay my phone bill would it carry over to AT&T?