I am unsure where to find the latest update code but me and a few friends with p20 devices have had the same problems since the latest update. Not sure if it's a coincidence or an actual problem with the update, haven't seen it being discussed anywhere else. Seems to be a problem like ghost touch, and yes ive done a reset and my screen is clean. Ive always used the charger I got with the phone as well. No water damage, probably had it for a year. Anyone know more about this or possibly a solution?