Security; Locking The Keypad; Enabling The Phone Lock; Pin And Puk - Huawei C2857 User Manual

8 Security

Locking the Keypad

To prevent unintentional operations, you can press and hold the # key in
standby mode to lock the keypad. When the keypad is locked, you can press
the Call key to answer an incoming call and make an emergency call.
To unlock the keypad, press the Left soft key and then the * key.

Enabling the Phone Lock

The phone lock protects your phone from unauthorized use. By default, the
phone lock is disabled.
Select Menu > Settings > Security Settings > Phone Lock to enable the
phone lock with the following options:
Immediate: to enable the phone lock immediately.

Power On: to enable the phone lock when the phone is powered on next

time.
When you enable the phone lock, you are prompted to enter the phone lock
code. The default phone lock code is 000000. You can change the code to
any string of four to eight digits.

PIN and PUK

Contact your network operator as to whether a User Identity Module (UIM)
card is required for your phone.
The personal identification number (PIN) protects your UIM card from
unauthorized use. The PIN Unlock Key (PUK) is used to unlock a blocked
PIN.
If you enter wrong PINs three times consecutively, the phone prompts you to
enter the PUK. If you enter wrong PUKs 10 times consecutively, the UIM
card becomes permanently invalidated. In this case, contact your network
operator for a replacement.
The PIN and the PUK are provided with your UIM card. For details, contact
your network operator.
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