Check out a demonstration video below:

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Yahoo! Mobile offers an open environment within which consumers can bring together their favorite content and services from across the Internet. The new Yahoo! Messenger application will provide iPhone users in the U.S. with the industry’s leading messaging experience. Features include the ability to send and receive instant messages, exchange photos, add contacts, change status, send emoticons, and stay logged in an idle state when using other applications on the iPhone. In addition to this standalone iPhone application, Yahoo! Messenger is also available within Yahoo! Mobile (both for the Web and iPhone) and as an application on several other types of mobile devices from leading manufacturers.

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Yahoo! Go now runs on over 330 phones worldwide, including many Windows Mobile Devices. You can download the free software at  http://mobile.yahoo.com/go.

If you are a BlackBerry Bold user, and have tried this software,  please share your feedback here.

[via BlackBerry Cool]

Yahoo! oneSearch will provide Virgin Media’s mobile consumers with relevant information on virtually any topic — from news, financial information, weather conditions, Flickr photos and lottery results, to Web and mobile web sites, travel information, integrated information from Wikipedia and Yahoo! Answers, and much more. Yahoo! oneSearch will also display relevant ringtones, wallpapers, games and other content within search results.

“Working closely with our 70 mobile operator partners, Yahoo! oneSearch is a starting point for mobile consumers globally, revolutionizing the mobile search experience by delivering relevant answers to queries that mobile users have while on-the-go,” said Mitch Lazar, managing director of Connected Life Europe, Yahoo!. “Together, Virgin Media and Yahoo! are enhancing the user’s mobile Internet experience in the UK while creating unique opportunities for advertisers to reach a highly-engaged audience of mobile consumers.”

Yahoo! oneSearch powers mobile Internet searches made through T-Mobile web2go, available starting today on T-Mobile phones. Providing customers with access to the latest news, information and content, Yahoo! oneSearch intuitively returns search results grouped around the person’s intent. For instance, when customers search for a sports team, Yahoo! returns the latest scores, schedules, team profiles, roster, news, images and a link to the team’s Web site. Alternatively, if a user searches for a movie, Yahoo! returns show times at local theatres, reviews, news articles and information on the cast.

Yahoo! oneSearch will also display relevant ringtones, wallpaper, games and other content available in the T-Mobile store within search results, eliminating the need for customers to search within a separate window for downloadable content.

Web2go is available today across the majority of new T-Mobile phones, including most Motorola, Nokia, Samsung, Sony Ericsson and BlackBerry handsets. This enhancement is automatic for T-Mobile customers with compatible phones. T-Mobile plans to make web2go available on nearly all new T-Mobile phones over the coming months.

Yahoo! oneSearch will provide customers who search AT&T MEdia Net with access to news, financial information, weather conditions, Flickr photos and Web images, as well as Web and mobile web sites. Yahoo! oneSearch will also display relevant ringtones, wallpaper, games and other content available in the AT&T MEdia Mall within search results, eliminating the need for customers to search within a separate window for downloadable content. AT&T’s YELLOWPAGES.COM will provide local search information to customers as part of the agreement.

Also beginning today, Yahoo! will provide mobile-sponsored search advertising within mobile search results conducted through the AT&T MEdia Net portal.

“With Yahoo! oneSearch, we created an award-winning mobile-first search experience capable of delivering relevant answers to mobile users on-the-go. With over 60 partnerships with leading mobile operators around the globe, we are a leader in mobile search and are incredibly excited to bring Yahoo! oneSearch to more and more users every day,” said Bruce Stewart, vice president and general manager, Connected Life Americas, Yahoo! Inc. “Together, AT&T and Yahoo! are meeting consumer demand for compelling mobile services, while creating scale for advertisers, enabling them to reach the rapidly growing audience of mobile consumers.”

The partnership leverages JAJAH’s open, next-generation communications platform to support the existing Yahoo! Messenger voice offering beginning in the third quarter of this year.

“This partnership with JAJAH will help Yahoo! continue to provide a great communication experience to our millions of Yahoo! Messenger users,” said Sabrina Ellis, vice president of Yahoo! Messenger. “Yahoo! Messenger is one of the first communication tools consumers see and use when they turn on their computers, so it is critical that our partner mirror our commitment to our users, and JAJAH’s reliable VoIP network and proven customer- and carrier-friendly experience make it an ideal solution.”

Since 2006, Yahoo! Messenger users have been able to use “Phone In” and “Phone Out” to make and receive voice calls on their PC to and from landline and mobile phones.

By enabling publishers to integrate relevant content into the Yahoo! oneSearch results, it is more likely that consumers will be able to find exactly what they’re looking for. For example, whereas today’s search results for “Italian restaurants” includes information such as addresses and phone numbers, open results could also include information from restaurant booking companies displaying the number of available reservations. Or, as another example, search results for “London” might provide transit schedules from public transit providers such as upcoming arrival and departure information.

Open search results are expected to debut with initial partners in Q2 2008.

Yahoo! oneSearch will also inclue a Search Assist which is made to ease your text input. Search Assist will predict your text and as you begin to type, Search Assist surfaces the most common search queries in real time that match the letters you have submitted so far.  At launch, Search Assist is available for the iPhone and is expected to become available on additional AJAX-compatible devices over the coming months.

Yahoo! is partnering with vlingo to enable voice-enabled version of Yahoo! oneSearch, consumers can search for anything, including flight numbers, locations, Web site names, local restaurants, by simply speaking. While using voice as an input, you can also complete the text input via the keyboard at any time.

Available beginning today for select Blackberry devices including the 8800 series, Curve, and Pearl in the United States, the new voice-enabled Yahoo! oneSearch can be downloaded from http://m.yahoo.com/voice.