Kindly complaint to Samsung customer support through Samsung Members App as error report also send log files Along with this error report for this issue. Then go to service center for replace/repair it's. If you like please accept as a solution it's help to others users also, click on 3dots in my reply section and click on accept solution. Thanks.
Lot of s21fe customers facing Green line problem after software update samsung service center and samsung customer support asking to pay for display samsung must help it's customers send email to Samsung care try
After the March Security patch, a white/green line has appeared in the screen. This is a definetly because of the update,samsung must own up to their mistakes
As per your query, 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.
