Huawei Ascend G730-U27 - Manual (Page 90)

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Phone settings
Setting the PIN of your SIM card
A personal identification number (PIN) is delivered with your SIM card to
better protect your phone data. If you enable the SIM card lock, you must
enter the PIN each time you turn your phone on.
Before you perform the following operations, make sure you have obtained
your SIM card's PIN from your service provider.
1. On the home screen, touch .
2. Under All , touch Security .
3. Touch Set up SIM card lock .
4. Select the Lock SIM card check box.
5. Enter your PIN, and touch OK .
6. Touch Change SIM PIN to change the PIN.
The SIM card allows only a limited number of consecutive retries if an
incorrect PIN is entered. If this limit is exceeded, you must enter a PIN
unblocking key (PUK), which you can obtain from your service provider.
The number of consecutive attempts to enter the PUK incorrectly is also
limited. If this limit is exceeded, your SIM card will be permanently
disabled. For details about these limits, contact your service provider.
Restoring factory settings
Restoring your phone to the factory settings erases all your personal
data from the phone storage, including information about your
accounts, your system and application settings, and downloaded
applications. Back up important data on your phone before you restore
factory settings.
1. On the home screen, touch .
2. Under All , touch Backup & reset .