Phone Lock; Pin And Puk; Locking The Keypad - Huawei G3501 User Manual

Press
4.
Press
5.
Press
6.
the function menu.
To return to the standby mode, press

Phone Lock

The phone lock protects your phone from unauthorized use. By
default, the phone lock function is disabled. You can change the
default phone lock code (1234) into any numeric string of four
to eight digits.
Do remember your phone lock code. If you forget it, contact the
service center.

PIN and PUK

The personal identification number (PIN) protects your SIM
card from unauthorized use. The PIN unblocking key (PUK) can
unlock the 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

To lock the keypad, press and hold
to select a submenu.
(OK) or
(Back) to return to the previous menu or exit
to display the menu.
for about 3s.
7
.