Did you know?
Only one participant needs a Skype Premium account for group video calls.
If you’re experiencing any issues with availability status, chat and calling notifications in Skype for Windows Phone 8, try reinstalling the Skype application.
If you install Skype for Windows Phone 8 at the same time you install Microsoft Lync 2013, notifications may be unreliable when Skype is closed.
To resolve this issue: