Please go to service centre with original bill. If you had purchase within 3 years, they will charge apporx 1000 labour and change the display at free of cost.
Go to authorized samsung service centre with bill, show him device and tell them about green line issue after Software Update. They will check device and convey you that there should be no damage or water damage to the device before accepting the device. They will send this device to noida main hub which will take around 20-25 days. If main hub found any physical damage or water damage they wont change display at free of cost. On asking personally to service center guys, they told this issue is persistent in S21fe and S22 ultra more. This is the reason company has offered free display replacement under 3 years of bill.
