What’s new in version 5.3 for Windows Phone:

  • View shared PowerPoint presentation during a Lync Meeting
  • Control Lync with your voice - Join a meeting and play a voice mail

 

What's New in Version 5.3 for iPhone & iPad

  • View shared PowerPoint presentation during a Lync Meeting
  • Full support of the new iOS 7

WP 8:
http://www.windowsphone.com/en-us/store/app/lync-2013/d85d8a57-0f61-4ff3-a0f4-444e131d8491

iPhone:
https://itunes.apple.com/us/app/microsoft-lync-2013-for-iphone/id605841731?mt=8

iPad:
https://itunes.apple.com/us/app/lync-2013-for-ipad/id605608899?mt=8