The Bluetooth on Windows Phone does not support the required profile and this has various effects such as a custom ringtones are not forwarded from a device to the Bluetooth Headset (respectively set to default).
- How do I create ringtones using a Ringtone Maker app on my Lumia device?
- What to do if I cannot see my songs in the Ringtone Maker on my Lumia phone?
- What is the Ringtone Maker application on my Nokia Lumia device?
- I cannot hear the other person in a call
- How do I connect my Nokia Lumia (Windows Phone 7) to my computer?