Microsoft Corp. (MSFT)'s Bing will be the default search engine and map application on Research In Motion Ltd. (RIM)'s BlackBerry smartphones, the software maker announced Tuesday.

The deal was announced by Microsoft Chief Executive Steve Ballmer at BlackBerry World, an industry conference organized by RIM in Orlando, Florida. He did not disclose the financial terms of the deal.

The partnership is a boon for Microsoft in mobile search, a field where it directly competes with search giant Google Inc. (GOOG) The deal is expected to boost Bing's share in the Internet queries, which is currently dominated by Google's. Google's share of the U.S. search market is more than four times larger than that of Bing, according to Bloomberg News.

Bill Gates' Microsoft has added features and improved the marketing of Bing and entered into a 10-year agreement former rival Yahoo! Inc. to boost its market share. According to research firm ComScore Inc., Google had 65.4% of Internet queries in February, compared with Bing's 13.6%.

Last week, Microsoft announced record third-quarter revenue of $16.43 billion for the quarter ended Mar. 31, 2011, a 13% increase over the same period of the previous year. Earnings per share were $0.61.

Microsoft said in a regulatory filing announcing its third quarter results that the estimated U.S. market share for Bing increased 25%. The company's online services division, which offers Bing and MSN, had an operating loss of $726 million on $648 million of revenue in three months ended March 31, 2011.