Huawei Ascend P7 P7-L10 User Guide - Manual (Page 80)

Phone settings
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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.
Accessibility
You can turn accessibility features on or off, such as magnification gestures
and large text.
1. On the home screen, touch .
2. Under All , touch Accessibility .