How To Unlock At&t Sim Card. Insert an unacceptable SIM card other than the current carrier. You dont have to unlock your device.
Unlock request approved If we approve your request we email you the instructions to unlock your device and insert the new carrier SIM card. Install a non-ATT SIM card into the device and enter the unlock code on the LCD screen 1. To unlock your SIM card you will need a PIN Unlock Key PUK code from ATT.
The same also goes for Canadian carriers.
This unlock is for personal use not for bulk. When your phone has booted up an enter PIN message should appear on your phone screen. Enter the 8-digit unlock code to unlock your device. Insert an unacceptable SIM card other than the current carrier.
