Haier C2020 User Manual - Page 28

Disable PIN and PIN Change.

Page 28 highlights

ask for security code. PIN management In the standby mode, press to access the Main menu >Settings > Security> PIN management and one of the following menus: Enable PIN, Disable PIN and PIN Change. Change security code By default, the preset lock code is 0000. Call restriction This network service allows you restrict your calls. Factory reset Use this menu to reset the phone's settings you have changed. Clear memory Use this menu to clear all data (include Call History, Contacts (RUIM), Contacts (Phone) or Clear All) that you have stored. Phone info You can get SW version, HW version, and PRL version. 24

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ask for security code.
In the standby mode, press <Menu> to access the Main menu >Settings >
Security> PIN management and one of the following menus: Enable PIN,
Disable PIN and PIN Change.
By default, the preset lock code is 0000.
This network service allows you restrict your calls.
Use this menu to reset the phone's settings you have changed.
Use this menu to clear all data (include Call History, Contacts (RUIM), Contacts
(Phone) or Clear All) that you have stored.
You can get SW version, HW version, and PRL version.
PIN management
Change security code
Call restriction
Factory reset
Clear memory
Phone info
24