Chosen Solution
About an inch of the screen not responding to touch. Rest of the screen is fine and there no visible damages to the phone. Please tell me it’s just a cable connector come off loose and I can open and press on these clips to fix it.
That might be the case, otherwise you may need to do a full screen replacement. The screen replacement guide on Ifixit.com will show which cables should be connected and if neither of those suggestions work, it’s a motherboard issue, and not cost effective to repair, in my opinion.
You will have to replace the screen, it has damaged it and there is nothing you can do except change the screen. It can have a hair line crack or damaged it somehow. It had nothing to do with the motherboard. Put a new screen on it and you will be fine. A new screen is less than 30 dollars.