Sony is ending its attempt to bring its wildly successful console gaming brand to Android devices. PlayStation Mobile, which launched in 2012, was a hub that allowed high quality games to be accessible for PlayStation Certified devices. That certification will no longer be handed out to any future devices. Sony is keeping the service running smoothly on such devices running Android 4.4.2 and below; however, anything with Android 4.4.3 and up are being left in the dark. With future versions of Android, there are no guarantees that PlayStation Mobile will continue to operate correctly with software updates.
Source: Sony Japan