[Bug]: iOS Live Activity updates arrive but never alert (no Dynamic Island expansion, no Apple Watch alert) #20239

Activity

1. juliusmarminge commented on Oct 16, 2026

   

   juliusmarminge

   on Oct 16, 2026

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   Grok responding on behalf of Julius.

   Thanks for the careful comparison. The relay does attach an alert to the completion Live Activity update, so this needs more data before we can tell whether it's on our side or an iOS presentation rule. Could you share:

   • iOS and watchOS versions, and your device models
   • whether a Focus mode or Scheduled Summary was active
   • the T3 Code app version, and whether the server/relay is on a current build
   • whether the result changes if the Live Activity started less than a few minutes before the turn finished

   Note that iOS limits how often alerting Live Activity updates actually present, so we'll need those details to rule that out.
2. juliusmarminge

   added

   needs more infoInitial triage showed no bug. Awaiting more infoInitial triage showed no bug. Awaiting more info

   via-triageFiled through npx t3 triageFiled through npx t3 triage

   on Oct 16, 2026
3. rescuedfamily commented on Oct 16, 2026

   

   rescuedfamily

   on Oct 16, 2026

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   Thanks! A few of these are in the original report; repeating them here with the rest:

   • Devices: iPhone 16 Pro on iOS 26.6.1; Apple Watch Series 8 (GPS) on watchOS 26.5 (23T570)
   • Focus / Scheduled Summary: No Focus mode was active. Scheduled Summary is off. T3 Code is enabled under Prioritize Notifications.
   • Versions: T3 Code iOS app 2.0.0 (App Store). Desktop/server 0.1.1-nightly.20261016.3190. I can't see the hosted relay's build.
   • More Frequent Updates (Settings > T3 Code > Live Activities) is on.

   Live Activity age: your theory looks right for short turns. With Live Activity Updates on and the phone locked:

   Turn	Result
   Several short turns (about 1–2 min)	Card content updated. No alert on iPhone or Apple Watch.
   6-minute turn on a fresh card (old card cleared first), card running the whole time, another thread still running	Card updated to "Done" for that row. One short haptic on Apple Watch, which I assume was the alert, and it repeats on later completions. The locked iPhone never wakes or expands; I only see the change when I wake the screen myself. Nothing appears in Notification Center, and no banner.

   So alerts seem to be missing on short turns, and present but very easy to miss on longer ones. Two follow-up questions:

   1. Is a single Watch haptic, with no iPhone presentation and nothing kept in Notification Center, the expected result of an alerting Live Activity update while the iPhone is locked and the Watch is worn?
   2. For short turns, is the missing alert expected because the completion is the first update the card receives? (newlyTerminalRows returns nothing when previousAggregate is null, if I'm reading it right.)

   Other observations from these tests:

   • On Apple Watch, the tap arrives, but the finished task never shows up. The small (bannerSmall) layout renders only row0, and running rows sort before completed ones, so while another thread is running, the Watch card keeps showing the running thread and "1 active." The tap gives no sign of which task finished.
     

     t3code/apps/mobile/src/widgets/AgentActivity.tsx

     Lines 284 to 316 in e3b35d1

     	bannerSmall: (
     	<VStack alignment="leading" spacing={5} modifiers={[padding({ all: 10 })]}>
     	<HStack spacing={7} alignment="center">
     	{renderLogo(14, primaryForeground)}
     	<Text
     	modifiers={[
     	font({ weight: "bold", size: 13 }),
     	foregroundStyle(headerTint),
     	lineLimit(1),
     	]}
     	>
     	{attentionRows.length > 0 ? summary : activeLabel}
     	</Text>
     	<Spacer minLength={6} />
     	</HStack>
     	{row0 ? (
     	<HStack spacing={7} alignment="center">
     	<Text
     	modifiers={[
     	font({ weight: "semibold", size: 12 }),
     	foregroundStyle(primaryForeground),
     	lineLimit(1),
     	]}
     	>
     	{row0.threadTitle}
     	</Text>
     	<Spacer minLength={6} />
     	<Text modifiers={[font({ size: 11 }), foregroundStyle(phaseTint(row0.phase))]}>
     	{row0.status}
     	</Text>
     	</HStack>
     	) : null}
     	</VStack>

   • When I turned Live Activity Updates off, the card stayed frozen instead of being dismissed. After I turned the setting back on, the phone reused that card instead of arming a new one (armAgentAwarenessLiveActivityForLocalWorkNow returns early when an activity exists). It never updated again and showed "Agent status out of date" while work was still running. Clearing it by hand fixed that.

   • Even when the alert fires, completion is hard to notice when other work is running. On my Lock Screen after the 6-minute turn, the header still read "1 active agent." The only sign of completion was the green "Done" on the second row, and nothing was added to Notification Center. That's why I'd like an opt-in for an ordinary notification alongside the Live Activity. I'm happy to open a separate Ideas discussion if that's a better place.
4. t3dotgg commented on Oct 21, 2026

   

   t3dotgg

   on Oct 21, 2026

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   🤖 Claude Opus 5.5 responding on behalf of Theo

   Thanks for the report. One part of this is fixed on main in #11943 and #20265. Please test on the nightly built from main on 2026-10-21, or on the next stable release. One part is still open: Live Activity completion alerts can still be absent, including when the first observed update is terminal. If that part still matters to you, please open a new issue for that part only.
5. t3dotgg

   closed this as completedon Oct 21, 2026