my samsung s4 reboots after it gets to home screen

[Elvin Siapno]

Hi guys i'm new to this forum, and just now my s4 has a problem. It reboots after it gets to the home screen but before it reboots yellow lines shows up and then, after like 2 secs after the yellow lines, horizontal black lines shows up and then poof it restarts! I've had this phone for like 2 years and a half and this is the first time this happened to me. Please help me I really love this phone btw my s4 has a lollipop version. Thanks!

 

[Elvin Siapno]

well guys somehow it's working now, out of frustration I hit my phone against a wall lol. I'll update you guys if problem is permanently fixed or if the problem comes back! thanks all!

UPDATE: the problem is still persisting but now the problem occured when I tried signing in my google play account, seems like that when the phone is stressed out it restarts