Fact. Settings - Zte A16 User Manual

Cancel All: Select Cancel All to cancel all set call restrictions.
Note: You need to input network password to set or cancel network restrictions.
Three consecutive times of wrong network password inputting will lock the call
restrictions service. Please contact network service provider to unlock it.
4.5.7

Fact. Settings

In this menu, you can select to restore the related settings of the phone to factory
settings.
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