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2. Read the information about encryption carefully.
The ENCRYPT PHONE button is dimmed if your battery is
not charged or your phone is not plugged in.
If you change your mind about encrypting your phone, touch
the Back Key.
WARNING!
If you interrupt the encryption process, you will lose data.
3. Touch ENCRYPT PHONE.
4. Enter your lock screen PIN or password and touch NEXT.
5. Touch ENCRYPT PHONE.
The encryption process starts. 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.
Protecting Your Phone With Screen
Pinning
You can use the screen pinning feature to keep an app in view,
so others cannot switch to other apps or access your personal
information.
Turn On Screen Pinning
1. Touch the Home Key > > Settings > Security > Screen