This is what I've observed as well

Thanks for the quick response! I will work on that today. We've seen this happen on two devices so far with no correlation on iOS version or device. Considering our test group is only about 10 people the implication is concerning. I'll post here with a reply when I get the test project set up and sent to QA to see if we can reproduce it.

What happens if Push-to-start is your primary workflow and you don't add this property? Could devices inconsistently be issued update tokens for new live activities? On devices where this works, we see as soon as the activity is created the device is issued an update token. On devices or workflows where we see issues, the live activity starts but no update token is issued.

Any update on this?

The device I have on-hand is 18.3 but I've seen this happen across various versions of iOS. I updated my Test project again and also I have more information to add to my comment. Included in my Test project is my debugging utility that we are using internally. It tracks changes to a @MainActor @Published variable that holds a list of push-to-start tokens labeled "Push-to-start tokens". It appears getting a push-to-start token works when running from source. If you run the app you'll notice a token in the list. However, if you force close the test app then open it again you'll notice the push-to-start token is not given. You can then start an activity and a push-to-start token is provided. Force close the app then start it again and you have the same situation. https://github.com/bradp-dev/ios-test-projects/tree/main/liveactivitiestest Since we weren't making any progress on this we decided to launch with some mitigation measures but we are still seeing this happen in close to half of our users. The other half are able to get push-to-start tokens on start easily. @DTS Engineer

We have error reporting hooked up to a third party vendor. In the event that a device doesn't receive a push-to-start token 10 seconds after APNS has sent token via our delegate I send off a report and this is the list of devices that have reported this problem: iPhone 17 Pro Max iPhone 17 Pro iPad (A16) iPhone 16e iPhone 16 Pro Max iPhone 16 Pro iPhone 16 Plus iPhone 16 iPhone 15 Pro Max iPhone 15 Pro iPhone 15 Plus iPhone 15 iPhone 14 Pro Max iPhone 14 Pro iPhone 14 Plus iPhone 14 iPad Pro 12.9 inch 6th Gen iPad 10th Gen iPhone SE 3rd Gen iPhone 13 Pro Max iPhone 13 Pro iPhone 13 Mini iPhone 13 iPad mini 6th Gen (WiFi) iPad 9th Gen (WiFi+Cellular) iPad 9th Gen (WiFi) iPhone 12 Pro Max iPhone 12 Pro iPhone 12 Mini iPhone 12 iPhone SE 2nd Gen iPhone 11 Pro Max iPhone 11 Pro iPhone 11 iPad Pro 12.9 inch 4th Gen (WiFi+Cellular) iPad Pro 12.9 inch 4th Gen (WiFi) iPad Pro 3rd Gen (12.9 inch, WiFi) iPhone XR iPhone XS And list of OS versions: iOS 26.2 iOS 26.1 iOS 26.0 iOS 18.7.2 iOS 18.7.1 iOS 18.7 iOS 18.6.2 iOS 18.6.1 iOS 18.6 iOS 18.5 iOS 18.4.1 iOS 18.3.2 iOS 18.3.1 iOS 18.3 iOS 18.2 iOS 18.1.1 iOS 18.1 iOS 18.0.1

@DTS Engineer I've submitted a Feedback report: FB21158660