Huawei C2831, Руководство пользователя

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9 Enabling the Power-Saving Mode
z In standby mode, if the screen backlight is on and if the
keypad is unlocked, press the End key to turn off the screen
backlight.
z If the screen backlight is off and if the keypad is locked, you
can press the Left soft key or the End key to turn on the
screen backlight.
z In standby mode, select Menu > Settings > Phone
Settings > Power Save > On to enable the power-saving
mode, in which the keypad backlight is off from 09:00 to
17:00.
10 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:
z Immediate : to enable the phone lock immediately.
z 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.
11 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