User manual

15. Safety Precaution
29
PUK code (PUK1) is made up by 8 digits, unmodifiable. When the phone is
locked by PIN code, please enter correct PUK code to unlock the phone. If you
incorrectly input the PUK code ten times in succession, then the SIM card
cannot be used any more. Some PUK codes are provided together with the
SIM card, some should be gained from the network service provider. If you
don’t know the PUK code while your PIN code is locked, please never input
the code casually. In this case, please call the hotline of the service provider
for your SIM card, after simply checking about the user identity, you can gain
the PUK code for free to unlock your phone.
Caution：
Please be careful when use this function. If you forget PUK code, please
consult your network operator. If you incorrectly input the PUK code ten
times in succession, the SIM card will be scrap.
Select the desired SIM type and have the following options:
 Activated: You should input PIN code each time switching the phone on.
 Modify: You should activate PIN code before modifying it.
 Off: You should input the correct PIN code before deactivating it.