I had an Iphone 6 plus (model LL/A) with the same problem as you are.
I don't know exactly the mistake was come from firmware or hardware. However, as my experience now, i think it is caused by firmware.
When this problem happen to me, the iphone was at IOS 9.3.3, i tried to shake, lock and open screen, restart, press on some edges of the iphone even bang it softly then the screen respond correctly some times but this problem happen more frequent and i could't used the screen although i tried all above actions.
Then, I called to the Customer care of Apple, they asked me to bring my iphone to the care center for checking and fix. Because my iphone was jailbroken, i had to restore its firmware. I restored to IOS 9.3.5 due to IOS 9.3.3 was signature closed.
After the restoration, my Iphone 6 Plus worked very well in 1 or 2 days before the problem came again. This time, I tried my luck with IOS 10 (14A5346a). And boom, my Iphone have been well since last Wednesday 7th Sept.
I would like to share this with you and all technicians of ifixit.com with the hope for a completely cure to our Iphone. Apple has been revoked us, we have to help ourselves.
Hope this can help many people in the world.
(Please don't charge for fixing this problem by my shares)
This is my original post: iPhone screen flicker and touch is not working
If you have tried many methods but haven't worked, you can use ios repair software like this: https://www.youtube.com/watch?v=EczO4c_s...
Nancy Casas さんによる
This is odd, but I read in another post. Put your screen face down and your thumbs in the middle and press down while pulling up the top. It's not an awesome permanent fix, but it works and some have to do it occasionally to get it to work right. The iPhone 6 Plus had the bending issue and molex connect, (I think that's what it called) doesn't work properly and bends, cause the phone to not work. After 4 screens and it still not working that's the only thing that worked!
I have this same problem, I did dropped my iPhone before, and I had replaced the damaged screen already. Also let a technician to check my phone about this. It's kinda odd 'cause even though I replaced the damaged Screen and glass, it does still hang on me and I cannot touch nor swipe my phone. Any suggestion about this?
I don't belive this I just fixed the phone by pressing my thumb on the center backside and pulling the front side simultaneously.. well it does not last for long,, i have to do it everytime i use it :(
I just tried it. It worked! (face down, press down with thumbs while lifting up top! Wow!)