Changing the Home Screen and Lock Screen on Your Galaxy Tab A (SM-P550, SM-T550, and SM-T350)
You can set the Home and Lock screens to pre-loaded images, or pictures from your photo Gallery.
Changing the Home Screen and Lock Screen
Touch and hold an empty area on the Home screen, or pinch on the Home screen.
Touch to apply images to the HOME SCREEN, LOCK SCREEN, or HOME AND LOCK SCREENS.
Touch the image you want.
Touch SET AS WALLPAPER.
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