User Guide - AT&T
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...deleted. In the passcode unlock screen, press Menu > Forgot passcode? to unlock your phone with your phone, touch Menu > Settings > Privacy > Factory data reset > Reset phone. Change SIM PIN To change your PIN unlock code, contact AT&T. Note: Your PUK code is provided by AT&T. Warning: All downloaded apps... & security > Set up SIM card lock > Change SIM PIN. PUK Code To unlock your SIM PIN, you can touch Forgot passcode? Reset To reset your phone to factory settings and erase all the data on your memory card will need to enter your PIN unlock code (PUK code) when prompted.
...deleted. In the passcode unlock screen, press Menu > Forgot passcode? to unlock your phone with your phone, touch Menu > Settings > Privacy > Factory data reset > Reset phone. Change SIM PIN To change your PIN unlock code, contact AT&T. Note: Your PUK code is provided by AT&T. Warning: All downloaded apps... & security > Set up SIM card lock > Change SIM PIN. PUK Code To unlock your SIM PIN, you can touch Forgot passcode? Reset To reset your phone to factory settings and erase all the data on your memory card will need to enter your PIN unlock code (PUK code) when prompted.