Red vertical line appeared on S20FE screen

[C_______N]

As the title says. I had not dropped my phone from a significant height at all prior to the line appearing. It went away for about a day and came back, so I don't think it's a hardware issue. Restarting the phone didn't fix it, though. However, it does disappear if I dial *#0*# and enter the test screen. 

Any help would be much appreciated :] 

[SamsungLaura]

Hi @C_______N, are you able to share a photo or screenshot of the issue? 

PREVIEW

[cheesemancheeser]

I have to same thing but the red lines aren't showing up on screen shots

[SamsungLaura]

Hi @cheesemancheeser, 

Based on what you've described, I recommend for you to head into your nearest authorised service centre with your proof of purchase so that we can take a closer look into this. Please be aware that due to our Privacy Policy, your device may be factory reset before being assessed. I highly recommend backing up your device via Smart Switch, OneDrive and/or Google to ensure none of your data is lost.

For more information on how to back up your device: https://www.samsung.com/au/support/mobile-devices/back-up-samsung-device/ 

To book an appointment prior to heading in-store or to drop off your device via Australia Post: https://www.samsung.com/au/support/your-service/main 

To find your nearest store: https://www.samsung.com/au/samsungstore/