Pin And Puk; Locking The Keypad; Adjusting The Volume - Huawei U2800A User Manual

Settings > Security > Change Phone Lock Code to
change your passcode to any numeric string of four to eight
digits.
Please do not forget your passcode. Should you forget it,
contact your local device retailer.

PIN and PUK

The personal identification number (PIN) protects your phone
from unauthorized use. By default, the function is disabled.
To enable or disable PIN Verification, select Menu >
Settings > Security > PIN Verification.
You can select Menu > Settings > Security > Change PIN
to change your PIN.
The PIN unblocking key (PUK) can unlock a blocked PIN. Both
PIN and PUK are delivered with the SIM card. For details,
contact your service provider.
If you enter wrong PINs for a specified number of times
consecutively, the phone asks you to enter the PUK.
If you enter wrong PUKs for a specified number of times
consecutively, the SIM card is invalidated permanently.
Contact your service provider for a new one.

Locking the Keypad

When the keypad is locked, you can still answer incoming
calls or make emergency calls by pressing Call Key.
1. Press and hold # Key to lock the key pad.
2. Press Right Soft Key, and then press # Key to unlock the
keypad.

Adjusting the Volume

1. Select Menu > Settings > Phone > Sound > Ringer
Type. Press the Navigation Keys to scroll to a profile,
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