VoIP service, created with help from 8x8, will allow customers to place international long-distance calls over WiFi for much less than they would have to pay under standard roaming plans. Calls to China, France, Germany and the UK are as little as $0.04 a minute when dialing a landline. The app is available for all versions of the iPhone and certain Android and BlackBerry handsets. You can see if your device is supported (and chances are it is -- even the ancient BlackBerry 5810 has been granted access to the party) at the more coverage link. And don't miss the PR after the break.