Zte Z233V - Applying New Wallpapers; Changing Screen Brightness; Protecting Your Phone with Screen Lock

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NOTE:
To restore normal sound settings, press or hold the Volume up
key.
Applying New Wallpapers
You can set the wallpaper for the home screen.
1. From the home screen, select > Settings > General
settings > Display > Wallpaper.
2. Select Gallery or Wallpapers to choose the image you want
to use as the wallpaper.
Changing Screen Brightness
1. From the home screen, select > Settings > General
settings > Display > Brightness level.
2. Press the Left/Right key to adjust the screen brightness.
Protecting Your Phone With Screen
Lock
You can protect your phone by creating a screen lock. When it is
enabled, you need to enter a numeric PIN to unlock the phone’s
screen and keys.
1. From the home screen, select > Settings > Personal >
Security > Screen lock.
2. Select None to disable the screen lock, or select PIN to set a
numeric PIN that you must enter to unlock the screen.