JAJAH, a mobile VoIP company based in Mountain View, Calif., announced the launch of new white-label VoIP services for Windows Mobile, BlackBerry and Symbian mobile operating systems Thursday at Mobile World Congress in Barcelona, Spain. The solutions will enable VoIP calls over WiFi and cellular networks, and they are being pitched to carriers who can offer the services under their own brand.

JAJAH has already rolled out its platform for the iPod Touch and the iPhone, and the addition of these mobile operating systems dramatically expands the solution’s potential reach. JAJAH is touting the white-label solutions as end-to-end applications that carriers can brand and launch with very little development expense.

“Every carrier faces pressure to develop new services to keep hold of their subscriber base,” JAJAH CEO Trevor Healy said. “JAJAH gives carriers the ability to roll out these proven, simple to use services no matter which device their customers have, with almost zero time to market or development cost.”

JAJAH’s move to be compatible with all major mobile operating systems is a necessary market move for the company. The versatility of the client will make it all the more attractive to carriers seeking value-adds to their offerings.