What is the problem with my Moto XT 926 if my phone shatters or changes screen by itself?

[AC Question]

what is the problem with my moto xt 926 if phone shatters or changes screen by itself?

I cant 't play games on phone . i have bought it from grey market so it doesn't have warranty , i had purchased it one month ago . there is more problem in this stupid phone i have formatted it twice but still can't get solution.