Is there a way for a user (or another app) to revoke that permission. short of uninstalling the app? no. permission decisions are a one-time thing when the app is installed. update: on android 6.0+, users now have the ability to control what apps can do after installation. technically, this is not by revoking permissions, though the user. If you ever feel an app is asking for too much access to your device you can always revoke it and as of android 6.0, you can individually manage app permissions for any app and revoke them selectively.. Ios users are notified the first time an app is trying to access private data; ios users can revoke apps permissions. android users, especially developers and the technically savvy ones, cannot count on such liberty..
Revoke individual app permissions over the years, the permission system on android has evolved to the moon and back. unlike the old days, where you had to root your android devices to revoke permissions from the app, it’s nothing like that now.. To revoke an app’s permission, tap the toggle switch to flip it to the off position—it’ll switch from blue-green to gray. to re-grant permission, simply tap the toggle switch again.. We have the complete steps given ahead on how to revoke install unknown apps permission on android oreo devices. google has now provided a dedicated permission settings page where you can manage all the permissions of each apps..