How to fix Screen Overlay detected on the Samsung Galaxy J3 Luna?

I am having some trouble out of my ancient Samsung Galaxy J3 Luna.

pop up saus Screen Overlay detected. So I can't use the camera  for facetime/




Open Settings -> Applications -> Application Manager ->Press on More -> Apps that can appear on top -> disable an app one by one 'til Screen Overlay Detected no longer shows up. One of your app is causing this.



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