Transferring ringtones via Bluetooth is technically possible on an iPhone though arguably not worth the effort. As long as you have the relevant song, you can simply create the ringtone yourself; alternatively you may be able to buy the ringtone from the iTunes store. If you do decide to make the transfer you will need to jailbreak your phone and install third-party software that isn’t authorized by Apple. This is legal but technically unwieldy and could increase security risks. Writer Bio

Can You Send Ringtones Via Bluetooth on iPhone  - 15