Yahoo has officially released its Yahoo Mobile portal, both for the Web and as an iPhone app. Unveiled at Mobile World Congress, Yahoo Mobile for the Web works on more than 300 mobile device models in the US, Canada, the UK, Germany, France, India, Indonesia and the Philippines.

Yahoo Mobile for the iPhone is available for download through the iTunes App Store in the same countries. Other local versions will be released over the next few months.

The application includes mobile search and access to Web-based e-mail, social networks and Yahoo's IM, address book and calendar. It also gives users a single location for accessing their favorite Web sites, sports and news sites, RSS feeds, weather, stocks, horoscopes and a bunch of other stuff, just like when they personalize their MyYahoo page online.