Touch Digitizer does not work after replacement

I have removed and re installed my screen several times, and about half of the time the ribbon cable gets caught up in between the screen and the frame. Try taking it apart carefully and when your feeding the ribbons through the frame, look at the ribbons from the side. Use a small tool like tweezers or toothpicks to direct it through the hole fully. This solved my problems with this issue.

Apple INC. have had over 4000 (Iphone's) sent in when all they needed was to simply be taken apart and the digitizer (touch screen + LCD) needed to be unconnected and reconnected properly. if you knock your phone or its assembled wrong it can simply make it hard for the touch screen to work correctly this is a common mistake! the flux cables are the issue sometimes they don't get a proper connection and therefore the touch screen will sometimes be not very effective and sometimes will randomly stop working, making you have to lock your (Iphone) and try to use it again. locking and unlocking your phone usually would make it work again because it resets the touch timer. We have never had a case where some ones (Iphone) 4 not 4s is broken just because of a dodgy touch screen, if it is stuffing up, you either didn't plug it in properly, the cables are dirty or when you assembled it yourself you damaged the flux cables, thankyou very much and please try this simple method, it is NEVER a broken screen just because it wont touch sometimes. Official apple support crew. NEVER USE A DODGEY, FAKE OR RIP OFF COMPANY ESPECIALLY A CHEAPER VERSION OF APPLE CLAIMING TO BE APPLE!

digitizer flex cable was damaged.

my touch didn't work after I installed lcd glass

After replacing the powerbutton that had broken down, my screen started to behave strangely (non-responsive).

So I replaced the screen, but that did not help. The touch is unreliable.

So I checked the digitizer cable and re-connected it. It remains unreliable. I have to press it real hard in order for it to function a couple of minutes, than apparently it slightly disconnects again and the touch doesn't work.

Press it again, it is okay again for some time.

I am beginning to believe that my original screen was okay after all, there is something with that connection that gives the failures.

Any advise?

Guys, a question: can it be because the midframe is damaged? Or it has nothing to do with the midframe? I mean the lcd is being glued onto the midframe.

I replaced my screen with this https://www.amazon.com/gp/product/B07H7X...

After I replaced it the screen lights up and everything else is functional except for the touch. What shall I do?