WCell International has announched that its VoIP calling platform is now available for download on a variety of mobile operating systems, including BlackBerry, Java, Windows Mobile and Symbian.
The Hong Kong-based application for mobile devices is awaiting approval by Apple for listing in the iPhone App Store.

Media5 has released a SIP client application that allows the Apple iPhone and iPod Touch to be used as a IP-PBX extension.
The company says the full-featured softphone enables the Apple devices to be used to access the same phone services and features as if they were in the office.

Vopium has become the latest mobile VoIP provider to introduce an iPhone application.
The addition to its supported handsets comes as the company was named winner of this year's European Mobile VoIP Technology Innovation Award by Frost & Sullivan.

Nimbuzz has today released what it describes as the most comprehensive VoIP application for the iPhone after "quite a few" rejections from Apple.
Building on its iPhone app launched in November, Nimbuzz users can now make international calls to mobiles and landlines at domestic rates by dialing a local access number available in over 50 countries.