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lose data.
3. Touch
Encrypt phone
.
4. Enter your lock screen PIN or password and touch
Next
.
5. Touch
Encrypt phone
again.
The encryption process starts and displays its progress.
Encryption can take an hour or more, during which time your
phone may restart several times.
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 in order to decrypt it.