Chosen Solution
I have a problem with my touch screen after upgrade the last iOs 11.2, I tried to restore in secure mode, reinstalling the iOS, downgrade the iOS, Maybe I need to buy a new touch screen but i want to ask you guys if you maybe have a solution for this problem. My iPad is an iPad Air 2, model A1566
Did you only perform an iOS upgrade or did you do a screen repair at the same time? If you did a screen repair, then you may just have a defective screen or did something wrong during re-assembly. If you did not replace the screen and can confirm that it worked properly prior to your update, then try to do a full DFU Restore (this will wipe the device) or try installing the latest iOS Beta version (11.2.5) to see if that helps.
