How can I upgrade to Skype for Business for Windows Phone?
Skype for Business is available to users of Windows Phone 8.1 and later. If you already use Lync and have Windows Phone 8.1, you'll get the update automatically. See Skype for Business is coming to Windows Phone for details.
When I make a Lync call does it use my mobile minutes?
The Require Wi-Fi for VoIP setting allows you to choose whether want to use the cellular data network for audio calls. When you turn on Require Wi-Fi for VoIP and a Wi-Fi connection isn’t available, Lync will try to make the call by calling your mobile number instead. When you answer the incoming mobile call, you’re then connected to the Lync call. As a result, your mobile minutes may be used.
I don’t see all my conversations history on my mobile phone
The conversations history on Lync for Windows Phone is not synced with Microsoft Exchange. This means that conversations that occur on your Lync mobile device will be displayed only on that device’s conversation history and nowhere else. Also, when you delete a conversation on your mobile device, that conversation is permanently deleted. To keep a record of a particular conversation you’ve had on Lync on your mobile device, send the conversation to yourself from Lync as an email message.
What version of Lync do I have to be on to use it on my mobile device?
February 2013 Cumulative Update for Lync Server 2013. For more information, contact your support team.