Faint horizontal lines appear on screen after I touch it. They fade after a few secs

[MsThraxan]

I've noticed these lines appear on screen when my finger touches it. Horizontal lines appear, they seem to actually be in a fixed location, fading away after a second of no contact and then reappearing in the same location.
I have tried:
Restarting
Booting into safe mode
Remove screen protector
Changed screen brightness
Went into developer mode, there was a setting there to show where you press and it was turned off already.

Anyone know what on earth it is?

 

[Jannomag]

This must be a hardware problem. If you're still under Huaweis warranty, send the phone in for repair.
Hint: print the photos you made and put them directly beside the phone, so the repairman can see the problem.

 

[MrMunro0208]

I had the exact same problem and they disappeared after a couple days.

 

[mfgaspar]

I noticed that this lines appears after I activate "glove mode", but when I disable it, reduces the lines. Only stops this "bug" after a restart. Verify if you have glove mode on (settings > smart assistance > glove mode)

 

[paul678]

I got this problem too. Very rare and I think it's a hardware thing.
A colleague of mine made the screen do this when touching it but if I did the same nothing happened. The effect (he had) on the screen went away after a few tries.
I blame it on static electricity but might be something else...

 

[JamesRLS]

I have a similar problem except I have 3 faint white vertical lines running down through my screen, barely noticeable though, so im not sure what the problem is

 

[Tipico]

?

Anyone have further information? Im worried sick because I got this problem a couple hours after puting a "smart case" (cheap knockoff) on the device (has a magnet on the back and on the side) and a "glass" protector. I'll remove these for now and see what happens.

UPDATE: I'm almost certain it had something to do with my cheap screen protector (I haven't removed it tho). In any case, it took about two weeks before these lines seemed to stop appearing. Haven't seen them for 2 or 3 weeks now.

 

[PaulStranger]

Electrostatics

Anyone have further information?

White stripes (or lines) on the IPS displays appear as a result of electrostatic voltage. This problem has been confirmed for a number of smartphones other manufacturers: Huawei P10 Pro, Sony Xperia XZ1 and XZ2, HTC U11 and U11+.

for example, Sony says:

Sony Mobile is committed to providing the highest standard of product quality and customer service for all of our products. Due to the characteristic of the display, you may see stripe patterns as a result of electrostatic in some models. This is not a functional defect and usually the stripe patterns fade away as the electrostatic disappears.

"Electrostatic voltage is still just voltage. Materials that can store electrostatic charges are insulators (or are insulated by something), so the charge cannot leak away."
IMAO, this problem is not a global one, but it seems to me that it is related to hardware defects in the assembly of smartphones.