Microsoft Corp. announced Monday it had agreed to buy cell-phone software developer Danger Inc. The announcement comes the same day that Yahoo Inc. formally rejected the software giant’s $44.6 billion takeover offer.

“The addition of Danger serves as a perfect complement to our existing software and services, and also strengthens our dedication to improving mobile experiences centered around individuals and what they like,” said Robbie Bach, Microsoft's president of entertainment and devices, according to the Wall Street Journal.

Danger is based in Palo Alto, California and is specialized in making software that allows cell-phones users to browse the web, access e-mail and send and receive instant messages. Its wireless partners include deutsche Telekom’s T-Mobile and Fido, a division of Canada’s Rogers Wireless Inc.

The company was founded in 1999 by Andy Rubin, who later left the company to launch another mobile start-up, which was acquired by Google. Since then, Rubin has been heading the development of Google’s Android open-source mobile platform, which is gaining attention at the GSMA Mobile World Conference in Barcelona this week.

Buying Danger could boost Microsoft’s efforts to compete in the area of providing consumer-friendly mobile applications.

“With all the excitement about what's going on in the company right now, this is critical to our future and decisive for our future. It completes the picture for us in terms of making the transition from just being on the business side of things to being on the consumer side of things,” Bach told a news conference at the Mobile World Congress wireless fair in Barcelona, Reuters reports.

Financial terms of the purchase weren’t disclosed.