User interface crash

Hi all. Just bought a grand prime from T-mobile Hungary. Sometimes my screen just randomly freeze the notifications appear on lockscreen bugged the app preview doesnt show up app in the screen, notifications area dissapear etc.. I bringed to the service they reinstalled 5.1.1 lollipopp and recalibrated the phone but the problem show up again again... I restart the phone and it's work well for 1 day or sometimes only a half. They gimme back the phone said the problem doesn't show up for them (yeah they will not gonna log in to there facebook acc and start using get notifications, emails, play music etc...), but i started using and nothing changed. I returned to the service 2nd time they did the same thing but nothing changed again. I can't explain in words i didn't even find any problems like this please check the photos on my google drive. Not using harmless app only facebook, messenger, viber and play music.

Is there any way to post my drive folder link.... The forum dont let me do this and u guys will can't see the problem.