iPhone Lines are flickering when changing apps

[RandomLemonDude111]

Hello I have this problem for a long time. I got iPhone 6s installed with iOS 9.3.4 and I saw that the lines are flickering whenever I change apps. Do you encounter that problem? and do you have any fix for that?

 

[C DM]

What "lines" are we taking about here exactly?

 

[RandomLemonDude111]

Here's the screenshot of it, it flickers/stutter when I try to change apps.

 

[RandomLemonDude111]

Bump

 

[RandomLemonDude111]

The few display issues that arise mostly due to app compatibility problems. The flickering screen sounds more like a hardware fault. It could be something as simple as a loose connecting cable, but it is more likely to be a faulty LCD screen.

I tried to update it to iOS 10 beta 5, and the "line flickering" somehow lessen.