Notifications Q&A

When attached app to debugger with real device, the OS seems to kill the app if the Callkit interface isn't emitted by the app at background within 5s. Do you have any tip in debugging?

Years ago a notification evangelist had recommended supporting NotificationContentExtension and NotificationServiceExtension. Fast forward to notification AI summaries, live activities, and lock screen widgets, iPhone mirroring, and all the others I'm missing, are there any other features developers should be utilizing when building out a notification strategy? Conversely, are there things to look out for if we DON'T adopt something as a negative? For context, the notifications might be general all audience, as well as, direct to user with custom content.

When updating Notifications, is it best practice to delete and reset all of them, or just delete and reset the Notifications that need to change? We have data coming from multiple sources, and as a result, we are often updating the notifications. This can be several times in under 10 seconds.

We have an emergency alert app that can trigger alarms in the event of a potential accident. We currently use Critical Alerts, which works well when the app is suspended or running in the background. A key requirement is that the alarm continues playing until the user explicitly acknowledges or dismisses it, as nearby people may need to notice the alarm and assist. Today, we’re achieving this by scheduling multiple Critical Alert notifications with the maximum sound duration (30 seconds) to create a longer continuous alarm. While this mostly works, it feels like a workaround and isn’t fully reliable. Is there a recommended way to implement a persistent emergency alarm experience on iOS? Would AlarmKit be an appropriate solution for this use case, or is it intended only for user-scheduled alarms and timers? Are there any other APIs or patterns you would recommend?

Will your team consider adding an app delegate or notification center delegate to let apps know the system notification permission enable and disable change?

How far in advance can you register a live activity with an app using the remote notification support mechanism? Is this consistent across OS versions and device models? Any gotchas to be aware of when expanding to live activities and their supporting notifications in terms of update frequency or APNs dropping pushes if they queue up?

Populating widgets with silent push notifications would be great for us if they were more predictable. Can you share tips for debugging / testing in Test Flight beyond the usual recommendations available online? When messages are not processed it is a major challenge to distinguish between code problems and device throttling.