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Network settings: Set to automatically or manually select network.
Set preferred networks.
Security settings: Set security features to protect your phone and
SIM card from unauthorized use.
Restore factory settings: Enter the phone password to restore to
the factory settings. Some personal information might be lost if you
use this function, so be careful.
Note: You may be required to input the phone password in some of
the security setting interfaces. The default phone password is 1122. Go to
Security settings
>
Phone security
>
Change password to
change the phone password.