I just want to share my case with you. My S21 ultra phone has been around for 3 years and 6 months. I never dropped, scratched and updated my phone but still a green line suddenly appears on my phone screen. I complained Samsung about this issue multiple times, but in the end Samsung wants a quality check on my phone which was a water test which you have talked about in your case. Despite my phone failing in the test, they still gave me a free replacement for my S21 ultra screen because of a green line issue. I just paid the GST and labour charges to Samsung, which is approximately Rs 3800. In addition to this i also want to tell here that write an email to the CEO desk, which is available on the Samsung website in the support section, and include your entire case in that email. You will receive a call from their end. But you just have to note one point: you should not agree to their points that the screen should not be replaced free of cost as it is a manufacturing defect. In addition, you must write an email to the CEO's desk multiple times until they decline your claim. I also wrote emails three times to the CEO's desk and also to the service head. I reached out to the Samsung support center and created a forum for my case in the Samsung member app, but no one accepted my claim. In the end, I sent a fourth email to Samsung's CEO's desk, and they acknowledged my claim. The whole process took me 25 days to replace my screen without any cost.
