I cannot receive voicemail on S0-20.

In order to receive voicemail on your S0-20, you have to subscribe to the voicemail service from Skype, then enable it on your S0-20. Follow these steps:

1. Go to Skype.com, log in with your account information, and subscribe to or enable the voicemail service.
   
2. In your S0-20, enter Menu > Services > Skype Voicemail and see if the Voicemail subscription status is correctly displayed.
3. Enter Menu > Settings > Call Divert > Voicemail and enable the voicemail option.
4. If you still cannot hear voicemail afterward, reset your S0-20 and try again. Menu > Settings > General > Reset > Reset All.