Ringtones Not Syncing Between iPhone and iPad

Ringtones do not automatically sync between Apple devices, even when both devices are signed in with the same Apple Account (Apple ID).

Using the same Apple Account synchronizes certain services and data through iCloud, such as contacts, calendars, photos, notes, messages, and other supported information. Ringtone selections and custom ringtone files are not part of iCloud syncing in the same way.

For example, if you create or add a custom ringtone on one iPhone, it will not automatically appear on another iPhone simply because both devices use the same Apple Account. Likewise, changing the ringtone selected for incoming calls on one device does not change the ringtone setting on your other devices.

Each iPhone or iPad maintains its own sound and ringtone settings. If you want the same custom ringtone on another device, you generally need to transfer or create the ringtone on that device separately and then select it under Settings → Sounds & Haptics → Ringtone.

So, same Apple Account ≠ identical device settings. iCloud synchronizes only the types of data and settings that Apple has specifically designed to sync.