Chosen Solution
My iPad Mini 2 was working fine but had a cracked glass. I replaced the digitizer. Then it started random touches, opens apps, closes, swipes etc. all by itself. I thought this was a bad digitizer so I changed it but with no better result. This happens even if I have not attached the digitizer to the frame (only cable attached) so there can not be any problems with the contacts on the bottom. I put capton tape on all the visible contacts on the bottom of the digitizer and on the contact. The digitizer is also sometimes completely unresponsive. Suddenly it responds to touch then. I cleaned the contacts, restored the iPad in iTunes. Nothing helps. Any ideas? Update Yes Brian and Jessa you were right. Wish I had read this before. I don’t think I am the first one doing this wrong. I bought a new digitizer (third one) and followed the cable instructions very carefully. It works. This is really a delicate cable and this should be the first big warning before trying this repair. I have learned something and that is great! Some lessons cost more than others… :-) Hope you see my picture how the cable should be. Attach the top of the screen, THEN fold in the cable, THEN remove the adhesive from the bottom before closing it up.
Asle—your problem here is bent flex, 100% sure. Very common. Like Brian said, you have to let the flex bend TOWARD the LCD as in the original. When you let it stick to the adhesive on the frame, it will crease when you put the digitizer in place. Then you’re screwed. A new digitizer is the only solution, those tiny wires are crimped and broken.
Make sure that you are folding the ribbon cable properly. If it gets caught between the glass and aluminum that could cause damage to it. You want to have the cable looping in towards the LCD frame and it should slip down in the gap where the digi cable goes under the lcd to the mother board.
