How? I'm not talking about an application backend server but a notification serv...

		satvikpendem 20 days ago \| parent \| context \| favorite \| on: FBI used iPhone notification data to retrieve dele... How? I'm not talking about an application backend server but a notification server which Google and Apple have for all apps. I'm not sure besides polling or having a persistent connection to send notifications to an app while that app is not running.