i have some problems with unlocking the sim card after fixing the screen.
i have checked the antena wire and the four clips.
the phone will read the sim card, but as soon as i enter the pin-code, it's frozen. i'v tried differd sim-card but nothing help..
iPhone 4, iOS 7.1
If you mean that you attempted to repair your iPhone yourself, then you have voided all further support from Apple, which includes help here in Apple's forums. I'd suggest you ask for help in the forums run on ifixit.com, a site dedicated to people attempting their own repairs. Someone there may be able to offer advice.
Regards.
sim card unlock issue.
