Find out what to do if your PS Vita’s buttons aren’t responding.
Many of the functions, menus and applications of the PlayStation Vita system are controlled solely via the screen.
Check the current application's software manual to ensure that it supports button controls.
If the problem persists, access the Welcome Park application via the PlayStation Vita system's Home Screen to check if the button controls are functioning normally.
If the button controls are functioning, pressing an action button will trigger a percussive sound. Pressing a directional button will switch between tunes and touching the rear touch pad will trigger a sound effect.