My Z2 start working badly.
Sometimes it just stuck's on any action, screen stops updating (time and everything freezes), phone doesn't react to turn off button, only soft reset helps (turn off + volume or small red button).
But if I leave phone in this freeze mode, it usually comes back to live after ~8-10minutes and works perfectly again (until next freeze).
Freeze is very random, sometimes no freeze for hald a day, sometimes they are going one after another.
Phone doesn't have root and I didn't install anything recently. There are also enough memory.
What could cause such problem?
