Starting with Android Marshmallow, there’s a curious error that sometimes shows its face, but can be hard to decipher what’s causing it. The “screen overlay detected” error won’t allow certain apps to launch, which makes it a real nuisance.
This message appears when you’re running a floating app, and then start a newly installed one, which requests access rights. Floating apps include the chat heads of Facebook Messenger that can appear floating above other apps.
Affected Smartphones: Users across the internet have reported experiencing this problem on Samsung and Motorola smartphones. It seems likely to affect many manufacturers.
The technical background: As a security measure, apps ask for permission to use certain parts of your phone (internal storage, camera, etc.). In theory, a display overlay can interfere with the dialogue requesting permission, so you need to disable the feature to interact with the dialogue.
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