As of early 2026, Apple still does not have a native “Sync Alarms” toggle that makes the Alarm app on an iPhone 14 look identical to the one on an iPhone 11 Pro. However, because you are using iCloud, you will see some specific behaviors—especially if you have noticed alarms disappearing or reappearing across your devices.
1. The iCloud “Ghost” Sync
While alarms don’t sync in a way that allows you to manage them from any device, they are backed up to iCloud.
* The Symptom: If you reset one device or restore from a backup, iCloud will push your old alarm list to the new device.
* The Issue: This can lead to the “missing alarms” bug you’ve encountered. If iCloud is still “thinking,” your alarms might vanish on one device and suddenly pop back up once the sync settles.
2. The “Sleep Schedule” Exception (The only true sync)
If you use the Health App / Sleep Schedule (the “Wake Up” alarm), this does sync across devices signed into the same iCloud account.
* If you change your “Wake Up” time for tomorrow on your primary iPhone, your secondary iPhone (and Apple Watch) will typically update to reflect that new wake-up time.
* Regular Alarms: These remain “device-specific.” An alarm set for 7:00 AM on your iPhone XR will not ring on your iPhone 14.
3. Workarounds for Multiple Devices
Since you manage alarms for yourself and sometimes help your mother with her reminders, here are the best ways to “sync” the experience:
* Use Reminders instead of Alarms: Unlike the Clock app, the Reminders app syncs perfectly across all your iPhones. If you set a “Reminder” for 8:00 AM with a loud alert, it will show up on every device.
* Family Sharing: If your mother has her own Apple ID, you can use a Shared Reminders List. You can add a reminder on your phone, and it will instantly alert her on her device.
* HomePod/Smart Speakers: If you have a HomePod in the house, you can set alarms that are visible to anyone in the “Home” app, which is a great way to manage family schedules.