Issue With Glass Case.

[NickelNitro]

So I installed a bumper case with tempered glass back. This bubble kinda thing appearing  and when it goes off it produces a creaking noise. Will it harm my device in any way?
Thanks!

[manoj007s]

you have to use screen guard on the back side not glass if you want to install case

[NickelNitro]

so the glass sticks to the back?

[immi1]

use instead Screen protecter front and back .....

[NickelNitro]

it would look good but I need better protection.