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Difficulties to test AR on my android

Hi guys, I'm new to Augmented Reality. I created a project to change one type of card into another, it is working perfectly on webcam, but I can not test it on my Samsung J5 pro android 7.0 (8.1 samsung experience). I'm getting a blue and gray screen (I uploaded) Could someone have an idea what is the problem? Thank you all for the attention.