No ringtone.
- Adjust the volume by rotating the control dial while receiving a call.
- Depending on the connecting device, the ringtone may not be sent properly.
- Set [SET RINGTONE] to [1].
- The speakers are not connected to the unit.
- Connect the speakers to the unit. To select the speakers for ringtone, press MENU, then select [BLUETOOTH] [SET VOICE-OUT].