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This option allows changing the wallpaper.
3. Contrast
Modify the screen contrast.
4. Backlight
Set backlight timeout.
5. Keypad backlight time
Set the keypad backlight duration.
Security
1. Modify PIN.
2. Modify PIN2.
3. Modify the cellphone password (default 1234).
4. Privacy
Lock applications with the default phone password.
5. Auto keypad lock
Turn keypad locking on or off and set the timer.
6. Lock screen by End key.
Turn on/off screen locking by pressing the End key.
7. Guardlock
