iOS 26.4 Adds iPhone Alarm Toggle for Apple Watch Users
iOS 26.4 adds an 'Always Play on iPhone' toggle for Sleep Schedule alarms when wearing Apple Watch to bed. The option ensures alarms sound on both devices, addressing needs for louder wake-ups while retaining Watch benefits like haptics and sleep tracking.

By default, alarms set on iPhone trigger only on the Apple Watch when worn to bed. The Watch delivers haptic vibrations if in silent mode, which suits sleeping near partners or children.
The new 'Always Play on iPhone' toggle appears when editing a Sleep Schedule alarm. Apple's description states it plays the alarm on both iPhone and Apple Watch during bedtime Watch use. Disabled by default, the setting resides in the iPhone Clock app or Health app.
This applies only to Sleep Schedule alarms, not one-off alarms. It enables sleep tracking and watchOS 26's sleep score feature alongside a loud iPhone alarm.
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