Next Upgrade Early? - AT T Community Forums Since you purchased on the Next installment agreement, you can only upgrade with trade in by "paying to upgrade" It means paying all but the last 6 or 8 payments at the time of upgrade, trading in your mint condition phone, and starting a new Next agreement
Note 4 N910AUCU1BNK3 Firmware Update Broke my Phone Settings On December 2nd, AT T pushed the N910AUCU1BNK3 firmware out for my Note 4 After the update, whenever I try and go to Phone->Settings->Call->Additional Settings, I get an error "Network or SIM error "