12.3.1
Just updated 6plus with IOS 12.3.1. I am getting a grey flicker coming from top of screen. Also the passcode is jamming and finger print doesn't work, also cannot swipe up to close aps when it is jamming. I turn it on and off a couple of times or remove the sim it will fix for a short while. But need to keep turning it on and off thoughout the day
iPhone 6 Plus, iOS 12