I have been experiencing this problem since I bought this phone, which is an Infinix HOT 4 Lite. I thought it was a virus because I installed a lot of applications then, so I did a Factory Reset. The problem was persistent. The following happens to the screen first:
Then it stops responding, until it reboots again. I noticed that this happens when I turn on the screen, but not always. OS version is Marshmallow (Android 6.0), and it is not rooted. I searched Google a bit but I couldn't find anything related to this case.