Zte Blade G User Manual page 27

The encryption process starts and displays its progress.
Encryption can take an hour or more, during which time your
phone may restart several times.
WARNING! If you interrupt the encryption process, you will lose
data.
When encryption is completed, you're prompted to enter your
PIN or password.
Subsequently, you must enter your PIN or password each time
you power on your phone, to decrypt it.
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