iPhone 5s Waterdamage brightness problems
So I got a call from a customer telling me they dropped their iPhone 5S in the toilet a little while ago. The phone is still working fine but the birghtness won't go up anymore. Inspecting the phone ofcourse I find some water damage. A new screen won't fix the issue either. Is there maybe a way to fix the phone so its brightness will go back to normal again? (Oh and sorry for the bad photos)
Hopefully this is still fixable.