How do I fix setting overlay?

To be true Screen Overlay is basic feature used by almost every application.

Messenger Chat Head, Inbox Messages Preview and Whatsapp Messages Popups are all examples of screen overlay feature, so you cant uninstall all application to resolve Screen Overlay Detected popups on your device...

You just need to manually turn off screen overlay of all applications in your device, Follow following settings to turn off screen overlay of android application:

> Settings

>Application Manager

>Click on Three Dots (Top right corner) & Select Draw Over Other Apps

>Turn off screen overlay of all apps one by one

This must solve the issue of screen overlay in your device...

If this isn't solving then screen overlay issue in your device or you haven't got my answer then refer to below reference:

how to turn off screen overlay

You also need to turn off screen overlay of System App after the step no 4. For some it may work without turning off screen overlay of system apps but for some it may not work. If you didn't get what I mean then you can refer to below official source:

screen overlay detected

Screen Overlay Detected Fix