Facebook vulnerable in mobile face-off

SOUNDBITE: MARK ZUCKERBERG, FACEBOOK CEO (ENGLISH) SAYING:

"Today we are finally going to talk about that Facebook phone or more accurately we are going to talk about how you can turn your Android phone into a great social device."

And with that Facebook CEO Mark Zuckerberg makes the next move in the battle for mobile dominance.

Facebook Home is more than just a plain app, but less than a full-fledged branded phone. It incorporates the social network's news feed and instant messaging with Android text messaging, and even throws in an app manager. The goal: keep mobile users connected to Facebook longer -so advertisers can dig deeper.

But Kevin Burden of Strategy Analytics says Facebook won't be knocking out its competitors, who offer much more.

SOUNDBITE: KEVIN BURDEN, DIRECTOR OF MOBILITY, STRATEGY ANALYTICS (ENGLISH) SAYING:

"Until they continue to build out that platform beyond more than just a social networking platform, they are probably most a