Originally Posted by matigas_TT
Take a pic with the car about 20 feet away from the wall. Then hold your camera above the cut off where you see that glare and take a pic of the car. I'd be curious as to if your phones camera lens is blinded by the glare.
It would be nicer if you had a light meter so you can gauge the brightness of the glare using a professional tool but not many people have those.