User manual

Security 57
Personalize Your Lock Screen
To change your timeout, touch Menu >
Settings > Display > Screen timeout. If
you don't touch the screen or press any
keys for this amount of time, the screen
locks automatically. To unlock, see “Lock &
Unlock” on page 57.
To change your lock screen picture, touch
Menu > Settings > Display >
Wallpaper settings.
Lock & Unlock
To lock the screen/phone:
• Press Power .
• Let the screen time out (don’t press
anything).
• Switch the power off.
To unlock the screen/phone, press
Power , or switch the phone on to
display the lock screen.
Lock Your SIM
Enable SIM PIN
To lock your SIM (the next time you power
up the phone you will need to enter your
SIM PIN), touch Menu > Settings >
Location & security > Set up SIM card
lock > Lock SIM card. Enter your SIM PIN
code.
Caution: If you enter an incorrect PIN
code three times, your phone locks your
SIM card and asks for your PIN unlock
code, contact AT&T.
Change SIM PIN
To change your SIM PIN, touch Menu >
Settings > Location & security > Set
up SIM card lock > Change SIM PIN.
PUK Code
To unlock your SIM PIN, you need to enter
your PIN unlock code (PUK code) when
prompted.