Change PS Vita Wallpaper
To customize the PS Vita background wallpaper, you need to enter to the edit mode. Simply follow the steps below
Tap and hold anywhere on the screen for a few seconds to enter edit mode.
While youre in edit mode, head over to the lower right hand section of the page and tap the Background Settings icon.
Select the background image you want for the PS Vita. Images saved on your memory card can be used for background wallpaper.