User's Manual

63
Security
Some safety options are provided in this option.
SIM card safety setting.
SIM lock
You need to enter the correct PIN before you can set the SIM lock.
Every time when you switch on the phone, you need to enter the PIN if
the SIM lock is on. If you enter a wrong PIN for 3 times, you need to
enter the PUK to unlock it. Contact your service provider if you don't
have or you've lost your PUK No.