2) Yesterday i experienced a more serious glitch. I was playing an android game, and suddenly the phone crashed and started showing the "recharging" screen even though the phone was not plugged in. Later i found out that someone had tried to call me while i was playing, but the phone did not ring. Starting the phone again fixed the problem. A bit earlier the phone also just crashed when playing the game, and i had trouble even restarting it until i plugged it in. The battery showed ~60 % load. The game i was playing is "Hill climb racer".