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PIN code change.
Phone lock
This function is to lock the phone and prevent other people from using the mobile
phone without permission (default password is 0000). After enable the phone lock,
you must input the correct security code every time powering on the mobile phone,
unless the mobile phone cannot be used normally.
Change security code
Phone security code: the current phone security code can be changed. You can
make it through pressing the system prompts.
Call firewall
Use this menu to block some numbers to call you.
In the Black list, you can add numbers to the list and then you can change the mode
to turn the black list on/off.
Privacy protection
In this menu, you can protect your phone book, messages, and call history. Enabling
Privacy protection for any of the above items will prevent other people from opening
these items.
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