Chosen Solution
I have replaced the part and the installation proved to be easier than I though, however once I turned the phone back on, the touch function does not work at the bottom of the screen, I cannot hit the space bar and the lower letters…nothing…what do I do?
If the part that you just replaced is the digitizer panel that means you might have faulty digitizer panel. But before jumping to conclusions,i would open the phone again, and i would disconect the cables #1 #2 and #3,and i would take out the lcd+digitizer panel assembly and set it aside. Then i would check with a magnifier mirror,the contacts on the flat cable #1 which is the one responsible for the digitizer panel and then i would take one of those aerosol spray cans,used for cleaning of computer keyboards and i would blow a few jets of air in the conector where the flat cable #1 goes in.That’s the special one that you have to lift a small piece of him to be able to put the cable in and then you have to slide it back down to secure the cable in place. It might be a speck of dust or something small inside there that doesn’t allow a good contact and then you don’t have the bottom of the screen working,like you do now. Good luck.
I believe you have a faulty piece of hardware. Maybe it was messed up during transit, or maybe you just bought a faulty one.
I had this same problem. Multiple restores, cleaned and reseated contacts, to no avail. I decided to try downgrading to 3.1.3, and after downloading an ipsw, trying to restore with it and getting an error, I restored to 4.2.1 without issue, bottom working perfectly. I’m not offering this as a tutorial as I’m mainly an Android guy, but it definitely worked for me. Cheers, tabormeister
I have a nexus 7 and when I type it jumps to the next letter