Jim some smart phones will allow you to use them as a teathered modem to your computer. Some allow you to use them as a wireless hotspot. I use a Verizon Wireless router box to get on the net. Works simular to a smart phone and for the most part pretty good service on ventrillo. As far as I know there are no apps for smart phones for Ventrillo. Most do offer Skype Apps for voice communication and some even allow for video.