iOS 27 Alarm Issue: Alarms Going Off on Both Devices

First reported on r/ios on June 25, 2026.

Some users of iOS 27 are reporting that their alarms are going off on both their iPhone and Apple Watch, even though they had previously set up to only have haptics on the watch and no sound on the iPhone.

What it looks like

  • Alarm going off on both devices
  • Alarms not working as expected

How to fix it

  1. Reset your alarm settings to their default values.
  2. Check that your iPhone and Apple Watch are properly connected to each other.
  3. Update your iPhone and Apple Watch to the latest version.
  4. Disable and re-enable the alarm on your Apple Watch.
  5. If this doesn't work, contact Apple support for further assistance.

Affected products

  • iOS 27

Sources

Search terms covered: ios 27 alarm issue, alarms going off on both devices