[Solved] Screen Overlay Detected
As marshmallow was major update to protect users privacy, and allow them which permissions they want to give to users. these security measures sometimes create complications for standard users and don’t allow them to change permissions. “Screen Overlay Detected” is one those notification which pops up during modification of access permissions.
1. Tap on open settings link, as shown in above image.
3. Now you have to tap on each app one by one and disable it, as shown in image below.
my suggestion is turn off each app one by one, and check again if it allows you to change permission, this way you can find which app is causing problem and you can leave it set to off forever. it won’t cause any bug.
6. On next screen you will see option for Draw over other apps , tap on it and change all permission to yes again, as you turned them off earlier.