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Apple's remote notifications programming guide says this:

On an iOS device, if a user force-quits your app using the app multitasking UI, the app does not receive remote notifications until the user relaunches it.

But I am certain that when I force-quit Facebook, WhatsApp or Signal, I still receive notifications about incoming messages.

How do they pull that off even though Apple says that's not possible?

codingChicken
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    Does this answer your question? [Push Notification code execution (forced-quit app)](https://stackoverflow.com/questions/32016616/push-notification-code-execution-forced-quit-app) – esqew Mar 25 '21 at 13:54
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    If the remote notification contains an alert payload, ios will still display this. Your app just can't receive silent push notifications. If your app is a VoIP app then you can use a VoIP push to relaunch your app but your app must then report an incoming call to CallKit or it will be terminated. – Paulw11 Mar 25 '21 at 21:20
  • Great, yes that answers it. – codingChicken Mar 26 '21 at 19:11

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