A hardly noticeable line appeared on my screen yesterday out of nowhere, restarted the phone but its still there. Its apparent especially on a white background. I've read some forums and a lot of people has the same issue.
This is definitely a hardware problem. I hope Samsung can fix it and repair the screens for free.
Your screen might have a bit of burn-in - it's a typical issue of AMOLED screens, especially when the screen tends to be on for an extended amount of time. I understand why this can be annoying, but this is usual wear and tear damage that many phones suffer over time.
You can opt for a screen replacement at a Samsung Service Center near you. You can check out a cost estimate for your replacement here: Eco-Conscious Repair | Samsung Philippines
Apparently, mine disappeared after installing the latest update (Aug 5). But days before I visited a service center and told me that its a hardware issue and if I want it repaired, it will cost me $225. Better wait for 2 weeks and see if it still there before making any repairs.
