After Update Vertical Line appear on display

[kartharu]

After installing the October 2025 security patch update, my Samsung Galaxy S21 FE 5G developed a vertical line on the display. The issue appeared after the update, and the phone has no physical damage, no water exposure, and no accidental drops.

This seems to be a software-induced hardware issue caused by the recent update, as many Samsung users are facing similar problems.

Requesting Samsung’s urgent support to resolve this matter, preferably through a free screen replacement or an official fix, since the problem arose after the official update.

I am attaching the screenshot/photo of the issue for your REFERENCE. 

MY screen

Last Update 

[BiRdMaN]

Samsung offers free screen replacements for some Galaxy phones under specific circumstances, primarily related to a known green line display issue.

Conditions
(e.g., 3 years from purchase) and without physical or water damage.

Limited to certain models and regions, including the Galaxy S21 series, S21 FE, S22 Ultra, and extended to S23 as well due to the growing number of users facing the green line issue on their devices.

The offer is valid until 31st December 2025

If you find this helpful, I'd appreciate it if you could ACCEPT it as a SOLUTION. Thank you 😊

https://mphone.in/samsung-offers-free-screen-replacement-for-galaxy-s23-s23-ultra-in-india/

[cs_member10]

Dear Samsung Member,

Greetings from Samsung Customer Support!

As per your concern, we would request you kindly visit the service centre and inspect your device with the technical team end, they will provide you with all the information in a better way after inspecting the device physically.

You can locate your nearest service centre with this given link: https://www.samsung.com/in/support/service-center/

Warm Regards,
Samsung Customer Support

[Riyaz_18]

I also got the white line the day before yesterday during normal use. It’s only been 2 years.

#s21fe

[_uday_]

I had also having green line issue in my S21 Fe

[kartharu]

My friend's mobile also got a white line on the screen, but he never updated it, and he only bought his mobile two years ago.
I bought my mobile on October 3, 2022. I did a security update on my mobile on October 3, 2025. Suddenly, the white line appeared on October 8th.
When I went to the Samsung Care Service Center on October 9th and asked about it, they told me that since it's been more than 3 years since I bought it, they can only do a paid screen replacement for my mobile and cannot do it for free.
I asked them, 'I didn't cause any problem, did I? This happened only after you provided the security update. I didn't drop it in water either. Since this is your company's problem, shouldn't you cover the claim?'
To that, they replied that because it's been 3 years, they cannot do anything for free, and I would have to pay for the repair.
Can I file a consumer complaint about this?"