Exciting Lync Mobile Enhancements Released. Customers have asked if they send a Lync meeting request to their customers/partners who do not have Lync, can those customers/partners join the meeting via a mobile device. Prior to October 3, 2013, the answer was "no" - they could only join via the Lync web client. On October 3, 2013, Microsoft released an enhancement that allows users who do not have Lync to join using their mobile client (Windows Phone, iPhone, iPad) as a guest. MTC Irvine Architect Dean Suzuki talks more about this announcement in his blog post here.