a bit delicate, but easy

Mon problème

My camera showed something like "burned" spots and some dust specs all around.

Ma solution

I sweated a lot :)

I did not remove the battery.

One of the screws that held the battery bracket was broken; luckily the standoff screw underneath got unscrewed and I was able to remove the bracket with the screw attached.

The flash lens was the most difficult part to put back in properly. The cable of the camera does not come already bent, so it takes a bit of trial and error to put it correctly.

Camera works perfectly now, flash too.

When I rebooted it did not find the cellular signal, I put the phone in airplane mode and then back, and it works :)

Mon conseil

I read all the comments before doing the fix. Among the best ones: do not remove the battery, and "use a ice cube tray to store screws".