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Android APP

Change app permissions

1. On your phone, open the Settings app.
2. Tap Apps.
3. Tap the app you want to change. If you can't find it, tap see all the apps. 
4. Tap Permissions. If you allowed or denied any permission for the app, you'll find them here.
5. To change a permission setting, tap it, then choose Allow.

iPhone APP

Here's how to manage app permissions on iPhone.

1. Open your iPhone's settings. ...
2. Open Privacy settings. ...
3. Select the Apple app. ...
4. Toggle app permissions on or off.