Do Push Notifications with content-available work for users that have disabled Push Notifications?

Question

I'm looking into reliable ways of updating an iOS app with content of critical importance, when instructed to do so by a server.

This would have to trigger regardless of the state of the app (foreground, background, not running, etc). Most sources seem to indicate that Push Notifications with the content-available: 1 parameter are able of doing this.

My question is, what happens if the user either presses Cancel when prompted to allow the app to receive push notifications, or turns them off afterwards ? Is he only not going to receive alerts anymore, or will the push notifications be entirely ignored (including the content update) ? And if so, is there any other iOS feature that would reliably allow me to update the app's content (regardless of app state and without the user being able to disable it) ?

This is about iOS 7 and above.

Answer 1

If user disallows the push notifications , you can not send them the notifications forcefully.

What kind of data you want to update afterwards?

Most of the data can be changed dynamically by web services...