I have a Galaxy S7 Edge that i'm having issues with.
The first phone started getting the vertical pink lines on the screen, this went back for repair 3 times before I threw my toys. Samsung didn't really give a toss, they were happy to just keep trying to fix it. Fortunately Vodafone understands customer service and they replaced my phone for a nice new one.
The nice new one has now developed the exact same issue, I've had to send it back again... and again they just want to repair it.
I am so sick of transferring all my stuff from one phone to another and repeated trips into Vodafone to return and pickup my phones... When is enough enough.
I'm been told by Samsung that this is the first repair on this phone so any replacement has been declined. From my point of view this is the forth repair of my phone.
This is a known issue they just can't seem to fix.