Chosen Solution
After lcd and back glass replacement restart when i am calling. open camera, and the back camera not working.
Replacing the back glass on an iPhone 8 is a pretty serious repair. Did you do this yourself or was it done by a shop? The reason I ask is that to do this job properly, everything has to be removed from the housing prior to breaking the glass off. Even if that is done, the removal and installing of all the flexes can cause some minor damage to the flexes. It really doesn’t take much damage to cause issues. If you did this yourself, I would go back and double check the work and the condition of all the flexes. Then check the logic board for any signs of damage (a screwdriver or tweezer gone rogue).
