iPhone X green line issue

My iphone x 64 GB space grey started showing a bright green line vertically from to to bottom of the screen (right side). I an very much sure I didn’t drop my phone and also the phone was not subjected to any external pressure. Or else it did not contact with any liquid. This suddenly started appearing while I was using the phone and I have restarted to check whether it will disappear. But it still keeps appearing and I need a solution for this. Seems this is a failure in apple iPhone x and not my fault. Also i have used this phone for 13 months now from the date of purchased. I should get a better solution from apple.