Google Voice for the iPhone has yet to be sanctioned by Apple (NASDAQ: AAPL), but Palm (NASDAQ: PALM) has embraced the Internet phone program by green-lighting a free third-party version for its smartphones.

Google's (NASDAQ: GOOG) VoIP call-routing service, which is also available in Android and BlackBerry applications, offers users a centralized platform handling a unified phone number, SMS and automated voicemail transcription.

Controversy erupted when Apple failed to approve Google Voice for the iPhone, prompting an FCC inquiry into the matter in which Google, Apple and AT&T all filed explanations of their respective roles in the matter. AT&T (NYSE: T) is the sole carrier for the iPhone.

In contrast, Palm, recently approved gDial Pro, a third-party version of the app, for its mobile application store by drawing parallels between Google Voice and its own smartphone software.

Get the full story here at InternetNews.com.