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6. How to Access the “Draw Over Other Apps” Menu?
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The "Draw over other apps" permission and "Allow background data" permissions have nothing to do with storage. If you're only changing these settings because you want to reduce storage use, you're doomed to fail.

How to Access the “Draw Over Other Apps” Menu

This permission allows an app to draw an overlay on the screen, through which you can see whichever app you're trying to use. There are two main reasons an app might want this. One is for screen dimmer apps like Twilight. To change the colours of the whole screen, they draw an overlay across the whole screen, all of the time, in front of the app you're using.

The second reason is for a "chat bubbles" feature, where an app can display a floating button or picture that pops out into a bigger window you can interact with. It's possible to do some "chat bubbles" features without this permission, but that limits what the app can do.

When an app is drawing over other apps, it's not just displaying stuff: it's also receiving your input events touch and keyboard. This is how the chat-bubbles-type feature can tell when you've clicked on it. Normally, the overlay app will just pass all the touch events through to the app underneath, but this means it can monitor everything you can do and even fake touch events.

The overlay app is literally in between you and the app you're trying to use, controlling all your interaction with it.

What is Android screen overlay and what’s it for?

This makes the overlay quite powerful. An overlay app can see all the passwords you type, and it can click "accept" buttons for you. To protect this, Android has a feature for developers to mark some controls as sensitive. Controls marked in this way can't be touched or used by an overlay. One of the sensitive controls is the "Allow" button in the permission dialog. This stops the overlay app from silently giving itself more permissions by just bringing up the dialog and clicking "allow" for you. Another one is the "Install" button in the package installer.

Making this sensitive stops the overlay app from silently downloading and installing more apps. Third-party apps with buttons that spend money e. The downside of this protection is that you can't grant permissions to an app, or install a new app, or any other action like this, while you're using a screen overlay.

It looks like you're clicking on the "Allow" button, but you're only clicking on the overlay, and the overlay isn't allowed to click on the "Allow" button for you. To do this, you need to turn off the overlay app or this permission. This will open a list of all the apps you have granted permission to use the screen overlay feature.

Here you can manually revoke this permission for one or more apps. Common culprits include Messenger, WhatsApp, and the blue light filter app Twilight. Some phones may show you a list of screen overlay-enabled apps with switches next to them. Similar to the Samsung Galaxy, the steps to turn off screen overlay on LG smartphones are different from stock Android. Just open each item to enable or disable it. Thanks, Samsung!

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