Crack underneath the front glass of my iPad
I received a replacement for my iPad Air 4 about a month ago because the last one had a hairline fracture. I was using it today and noticed a tiny bubble or crack underneath my screen. (I don't have a screen protector so it was not that.). I felt the spot with my finger and felt no indents and the iPad casing had no dents.
Does anyone know what this is?
Also, this is on the border of the device only and is just a dot, not a long crack.