On an unlocked Android 14 phone the OS shows our call as a heads-up and does
NOT launch the full-screen IncomingCallActivity (full-screen-intent is
restricted for non-dialer apps while unlocked), so the ring — which lived in
the activity — was silent when unlocked (it rang only when locked, where the
activity launches).
Move the ring to a call-scoped Ringer (looping ringtone + vibration) started
in CallStore.showIncoming and stopped in CallStore.cancel (which every
answer/decline/cancel/end path already calls). The notification channel stays
silent, so there's still a single ring source. IncomingCallActivity no longer
rings — it's just UI — and no longer stops the ring on destroy (backgrounding
the call screen keeps ringing like a real call until answer/decline/timeout).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
SravanandClaude Opus 4.8
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