Microsoft announced Tuesday that its upcoming My Phone data synching service for smartphones running Windows Mobile 6.0 and later has entered broad public beta testing. Previously, My Phone had been in a limited beta test with selected users.

Set to launch when Windows Mobile 6.5 phones start to appear later this year, Microsoft's (NASDAQ: MSFT) My Phone will provide services similar to those in Apple's (NASDAQ: AAPL) MobileMe, such as synchronizing and backing up data between the users' phone and the My Phone Web site, where the data is stored in the user's cloud service.

My Phone debuted at the Mobile World Congress 2009 in mid-February in Barcelona, Spain, along side Microsoft's coming Windows Marketplace for Mobile App Store competitor.

The service will let users manage the information on their Windows Mobile phones via a Web browser, according to statements on Microsoft's My Phone site.

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