Zte TELSTRA SMART TOUCH User Manual page 96

Lock the screen
Press the Power Key to lock the screen.
Unlock the screen with a pattern
1. Press Power Key.
2. Draw your pattern to unlock the screen.
If you make a mistake you can try again.
If you forget the unlock pattern then
contact your Service Provider.
(U)SIM Card Lock
Set a PIN code on your SIM card to prevent others from using your
account. The initial PIN code is provided by your service operator.
1. Tap Home
lock.
2. Select Setup (U)SIM card lock. Enter the PIN and tap OK.
96
> Menu > Settings > Location & security > (U)SIM card