Iphone 6 plus screen has vertices lines
my iPhone 6 plus has not been dropped, had a case on it since day one. I noticed that it has lines on the right side of the screen going verticle. I'm able to get them to go away if I screen shot the phone but the picture won't show them. After I noticed this I also noticed that the part of the screen where the lines are stops working until I was able to find a way to make a phone call. Can anyone help!
also I noticed that since the new update I am almost always on 3G when I used to be primarily on 4g lte. Any ideas?
THanks for for the help.
iPhone 6 Plus, iOS 8