Skype for Business has arrived on Windows Phone! The Lync 2013 app has recieved an update, and should already be rolled out to your phone – at least if you have automatic updates on. If not or if it hasn’t updated automatically, you can get the update here.
One of the new features included in the client is that now all data stored locally on the phone – like recent conversations, voice mails, pictures and user settings – is now encrypted.
In some cases this encryption doesn’t get enabled in the update, so be sure to check Settings -> about in your app to see if encryption is on. If it isn’t, you need to uninstall the app and reinstall it again and it should be turned on.