Chosen Solution

I changed the screen and can not slide anymore. So I have image again but can not use my phone ;-(

You changed the screen yourself? If yes, you lost touch functionality and you must try the following: disconnect the display cables (all 3 of them), then reseat them carefully. Often when you’re connecting the screen cables, the touch-screen cable pops off without one noticing because the other flat cables are covering it. If this doesn’t solve it, put the old screen back (if it is broken but working) or try a new known good screen. If touch functionality is restored, it means the new screen is defective or was damaged during installation and should be replaced. There are other more serious but less occurring causes that we can investigate, but first try to rule out the above and let us know if you see any improvement.

I tried another screen from my son’s iPhone 5 and problem is still there. So it’s not the screen, but the iPhone. Help