Originally Posted by Trozzul
Vezion is a CDMA provider which does not use sim cards (only mini sims i think for specific devices) while att is GSM which uses both mini sims and regular sims.
Verizon LTE phones are all sold unlocked and use sims. Also every model that I can think of sold in the last couple of years has GSM bands to be sold as "world phones". I appreciate the attempt to be helpful, but spreading misinformation is the opposite of that. After some more trial and error, it was an ATT provisioning issue