In the last few years, many users of Samsung smartphones with AMOLED displays have reported that their phone’s screen develops a permanent green line (or sometimes multiple green lines) as the phone ages or while installing a software update. However, we never got to see the green line appear in real time. Well, now we do.

On Reddit, a user has posted a video of their Galaxy S21 FE updating to Android 14-based One UI 6.1. While the installation was about 60% complete, a green line appeared on the left-hand side of the display. From what we could gather, this is the first video to show a green line appearing on a Samsung phone’s display in real time.

The user, who seems to be from India, says that he read that many users reported that while updating the Galaxy S21 FE to One UI 6.1, a green line appears on the screen. As such, the user didn’t want to get the update. However, they downloaded the update by mistake, and to get rid of installation reminders, they decided to install the update.

However, the user also decided to record a video of the installation so that if the green line appears, they will have proof that it developed on its own and not due to the user’s mishandling of the device, which they may be able to show to service centre and get the issue resolved without paying any charge, which has fetched us the first video on the instance.

Samsung has acknowledged the issue long ago and is replacing the affected panels for free. The brand has also extended the period for people to avail the replacement program till September 2025.