I've confirmed through controlled testing that local notification sound is
suppressed app-wide whenever CarPlay is connected, for an app with no
CarPlay entitlement. Tested:
Sound plays normally with CarPlay disconnected
Sound is silent with CarPlay connected — confirmed by repeatedly
connecting/disconnecting CarPlay with the identical notification,
nothing else changed
No difference with phone locked vs. unlocked
No difference with Driving Focus on vs. off
No difference with interruptionLevel set to .active vs. .timeSensitive
Device: iPhone 13, iOS 26.6.2. Head unit: 2024 Toyota Tacoma (CarPlay).
My app has no CarPlay entitlement (not navigation/audio/EV/parking/food-
ordering), so I suspect this suppression may be intentional — but I can't
find it documented anywhere.
Given that, I'm looking at iOS 26 Live Activities as an alternative, since
Apple's docs say a Live Activity can appear on the CarPlay Dashboard without
a CarPlay entitlement. But I can't find documentation on:
Whether a Live Activity push-to-start or update plays an audible sound
when the phone is locked and CarPlay is connected.
Whether Live Activity content backed by data-protection class A/B
storage reliably renders in this state (separate widget guidance warns
this "likely won't work in CarPlay" since phones are usually locked —
unclear if this applies to ActivityKit content specifically).
Has anyone tested this, or know if it's documented somewhere I'm missing?
Trying to figure out if Live Activities are a viable path to a driver-
audible alert for a non-CarPlay-entitled app, before I invest more
engineering time in it.
Topic:
App & System Services
SubTopic:
CarPlay
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