air bubble in the center of the screen

Dec 13, 2014
Hi everyone.Suddenly there was a problem.It is the first hongmi(mtk 4.7 inch).Protective film(its not suitable i know) then seen on the picture was
pasted on top(the problem is under it).Is it possible that this another protective film?(which I did not know until now almoust year ).The edges are visible no gap,just in the center.
Or this bundle screen?Have you seen somthing like that?Thanks a lot.
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