Screen blurred on some Android device wiht Cardboard SDK

Hi,I developed a VR game with Cardboard SDK for Unity.Then I tried to run my game on various android deveices.Stranglely,on some android device,the screen blurred for 1 scecond when the game opened.
I also tried the DemoScene of the SDK,the screen still blurred on that android device.

Does anyone know how to solve this problem?
Thank you very much^_^



The...

Screen blurred on some Android device wiht Cardboard SDK