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The Samsung Galaxy A10 is an android smartphone developed by Samsung Electronics. It was released in March 2019.

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It randomly appears horizontal and vertical white lines on the screen

I already did all the troubleshootings to delete if its for software and it keeps happening, so I want to know if the problem is with the LCD or the gpu

Answer this question I have this problem too

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I was just using it and they randomly appeared yesterday


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You could always try mirroring the screen to a TV etc, as it is the CPU that generates the display images. The display is dumb, it only shows what it receives from the CPU. This doesn’t mean that there isn’t a problem on the systemboard though.

If the mirrored display is OK then as a DIY repair all you can do is to open the phone and ensure that the display flex cable connection to the systemboard is secure and then if it is OK to temporarily replace the screen and check.

Here’s the ifixit Samsung Galaxy A10 Repair guides that will help you to do this.

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Thanks for answer, but the problem is that I don't have any way to mirroring my phone


Hi @Alvaro snchez

Then you will have to replace the display to find out.

More than likely the problem is in the display as it has very delicate internal connections which can break even though there is nothing obvious seen on the outside


Hi, I've been notice that some horizontal lines has appeared mostly while I'm playing Monument Valley 2


@Alvaro snchez

May be just coincidence or maybe not.

Try starting the phone in safe mode and then check.

if it doesn't happen then a "downloaded" app is the problem. The trick is to find out which one is causing it to happen. A downloaded app is one that you installed on the phone and wasn't already pre-installed when you got it.


Thanks! Sometimes it happens when I'm switching between an app and another or when I'm already close one, but like you say maybe us just coincidence. This problem has a really strange evolution, before appears randomly vertical lines all over the screen, after that appears lines but this time was horizontal and finally in present mostly when Im playing that game or when i'm switching between apps or closing this.


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