iPhone X touchscreen glitch -
My iphone x seems to have a ghost touching the bottom area of my screen on some occasions lately. It seems to only happen recently after installing 11.4 and gets even worse when there is a temperature increase. The touchscreen seems to glitch out and is selecting random apps, swiping, and just spazzing out. It is very irritating as when this happens I lose complete control unless I shut the screen off. Please help! I have tried hard reset.
iPhone X, iOS 11.4