JAJAH is powering IP voice calling on Yahoo's newly released Messenger iPhone App, it was announced today. Yahoo! Messenger iPhone App 2.0 lets iPhone users make free calls to their Yahoo! Messenger friends, and low cost calls to any phone in the world.

Yahoo! and JAJAH have partnered together since 2008, when JAJAH was chosen to power the popular Yahoo! Voice service for Messenger on the PC. This is the first time this capability has been included in a smartphone application.

Ori Soen, General Manager, JAJAH Business: "We are delighted to continue working with Yahoo! to bring IP Voice services to users, and expand the offering to iPhone users, giving them the power to make IP calls on the go. As this shows, the JAJAH IP Platform has the flexibility to add calling to any service on any device, scaling to any volume."

Yahoo! Voice users with an iPhone can continue using their account directly from their iPhone App. To sign up for a Yahoo! Voice account, please visit http://voice.yahoo.com.

To download Yahoo! Messenger App 2.0 for iPhone, please visit http://itunes.apple.com/us/app/yahoo-messenger/id309219097?mt=8.