I have a N4 that does something that I cannot fix and I wondered if anyone could point me where to look next. The phone works fine but then randomly opens the keyboard app and types some stuff (random characters) then opens up a few apps closes them and turns off. When I turn it back on the phone has 0% battery. I have tried several stock roms but still no joy.
It is on 4.4.2 currently.
Any help is greatly appreciated!