Chosen Solution

I just fixed this phone and it comes on, looks great, but when I go to put the passcode in I notice I can’t press anything. The display works, but touch is not working. I don’t know what the problem is can anyone help?

I would check the digitizer connection to insure it is properly seated, no debris and that all of the surrounding components are present. If that is good, then you probably have a defective replacement screen. Remember that the Touch IC’s are on the screen in the 6S series so it would not be a logic board issue.