If you have a green line after the Samsung update, it may be due to the display overheating and malfunctioning.
In order to fix it, go to a nearby mobile store that has PROFESSIONALS and make sure you ON maintenance mode while giving the phone, they will check the display and probably switch the display, but if they say it cannot be fixed, then you go to Samsung and check, if they say it cannot be fixed, save all of your data in another device or transfer it, (first check with the shop you purchased from if you can refund) refund your empty phone and you will get 90% of the money you paid back (maybe not 90%) then you can purchase a new phone with the update installed and then transfer your data back into the new phone and Ta-da, no green line.
