[Windows Central Question]

After screen repair on my Nokia Lumia, I can't open my camera, games, facebook, email and other apps.

[rhapdog]

Sounds like a hard reset is in your future. Make sure you have a backup.

More than likely, the person handling the repair wasn't properly grounded, and may have caused some damage to either RAM or Storage Memory. Damaging the in-phone storage memory can cause a lot more issues than just certain apps not loading, it can cause OS instability as well. It could be that it just needs to be reset and that will fix it. If that doesn't fix it, then the repair shop messed up your phone and should replace it for you, since it was their fault.