Huawei Ascend G526 - Manual (Page 87)

Settings
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Before you perform the following operations, make sure that you have
obtained your SIM card's PIN from your service provider.
1. On the home screen, touch then the All tab.
2. Under PERSONAL, touch Security.
3. Touch Set up SIM card lock.
4. Select the Lock SIM card check box.
5. Enter the PIN.
6. Touch OK.
If you incorrectly enter the PIN a specified number of consecutive times,
the PIN is blocked and the phone prompts you to enter the PIN
unblocking key (PUK). If you incorrectly enter the PUK a specified
number of consecutive times, the SIM card will be disabled
permanently. For details about the maximum retry attempts for the PIN
and PUK, contact your service provider.
Turning on or off fast boot
1. On the home screen, touch then the All tab.
2. Under SYSTEM, turn on or off Fast boot.
When fast boot is on, your phone does not power off. Instead, it enters
deep sleep mode when you try to power it off. This may interfere with an
airplane's flight system, so please turn off fast boot when you are on a
flight.
Restoring to factory settings
Restoring your phone to its factory settings erases all your personal data
from the phone storage, including your email accounts, system and
application settings, and installed applications. Back up important data
before the restoration.
Back up important data on your phone before you restore factory
settings.
1. On the home screen, touch then the All tab.
2. Under PERSONAL, touch Backup & reset.