There is no ringtone.
- Raise the volume while receiving a call.
- To adjust the ringtone volume, press HOME, touch [Settings], and select [Ring Tone] of [Volume Settings] in [System].
- The speakers are not connected to the unit.
- Connect the speakers to the unit. To select the speakers for ringtone, press HOME, then touch [Settings] and select [Optional Audio Output Channel] in [System].
