Small discolored triangle on bottom right of screen
I have an iPhone 5s and recently (today) I noticed a small discolored triangle on the bottom right of the screen. At first i thought it was a crack but then when i turned the phone off it was gone, so i believe it is an internal issue. I have also tried restarting the device and that didn't help either. Anyone know about this?? Thanks so much!!
iPhone 5s, iOS 9.3.3, null