SCOTTSDALE, AZ--(Marketwire - October 27, 2010) - Several attempts have been made to develop and commercialize video telephony. Most ventures have proven unsuccessful. However, with the launch of mobile devices featuring front-facing cameras and pre-loaded mobile calling applications, interest in making real-time video calls on mobile phones has reemerged to the point where In-Stat (www.in-stat.com) projects mobile video calling revenue will exceed $1 billion by 2015.