Well, i went with my phone to someone who said that he used a paid software and he told me something about APX mode. I would tell you more but as you can see i'm kind of a noob. And if this helps, my android.process.acore keeps crashing and calendar,gapps etc keeps crashing and phone restarts . This isn't smth new, i had this problem on KitKat custom rom and i thought it was from custom ROM. Now i see that i was wrong. Is it possible to be a hardware problem ?