Original post by: Carlos Oulman ,
There are solder points on the back of the front facing camera assembly. Failure to keep the solder points covered can cause problems. Look where the assembly was stuck to the screen. You may find a piece of black tape. This was covering the solder points. If you can, remove it from the old screen and reattach it to the front facing camera assembly. If you can’t save the tape, use kapton tape to cover the solder points.