Hello I do not know whether this is the right place for my problem but did not know where it is very desperate to write.
Today I opened the brick to replace the display that I got on ebay in Hong Kong and I wanted to replace my because was completely scratched.
But I think something has gone wrong in the sense that I have done everything with great care and by following the videos that are around, but unfortunately when I went to turn on the cell I found the touch screen is not as dead .because I have a security code I can not even enter as the keyboard does not work for enter the unlock code.
I wanted to know if there was someone who had done this to try to understand what may have gone wrong in touch.
I state that I am a computer technician so I have lots of experience in fitting and removing computers and other cell so I doubt whether a contact.
I would not bring it in for service because I know exactly how they work and the time it takes, then surely I could make a fuss because the cell was open (although I doubt very much able to notice)
Sorry if I have dwelt too but I wanted to make you understand what I had done
thanks to all

Sorry for you little child...

I may suggest you to pay attention to the touch screen flat cable and his connector because it is so thin...
Anyway, clean the contacts of that flat with a little of alcool (those pins doesn't like finger tips) and verify that they are not interrupted due to the disassembly movements.

After all, if it is still not working keep searchin for a replacement... (with metal frame)

So I forgot to say a few things:
I got the touch on ebay and I paid 20 euros from Hong Kong
But the point is not that because I also tried to put my original and even that does not work anymore.
I also tried to change only the digitizer (which is my new one), which is nothing more than that piece of plastic that is glued on the touch but does not work anyway.
Also during the various tests I have also tried only with the digitizer but no touch does not work either so (now do not know if there is a sensor that detects that it is not attacked everything does not work, because naturally in the cell-free trial digitizer was divided into two pieces with all connectors attached though)
Now I'll try to clean the connectors to see if the problem was to
I did not understand what you mean by the word searchin
I sincerely hope that someone has done to help me succeed
thanks