iPhone 6 Plus
Hello, I heard there's a new update for my phone, I'm getting a glitch to the phone and the touch is not working good, it works sometimes and don't at other times, there is a glitch where to the top of the screen it shakes at lot and the touch screen stop working, what can I do, is it a newer update it need to fix the problem? My last update this week was iOS 11.3.1
iPhone 6 Plus, iOS 11.3.1