Microsoft has opened up the testing process for its mobile phone synchronization service, My Phone, to all Windows Mobile users running version 6.0 or higher of the operating system. Formerly codenamed Skybox, the service gives users 200MB of free storage to back up and sync information on their handheld such as contacts, calendar appointments, text messages, photos and videos to a password-protected site hosted by Microsoft.

Besides announcing the open beta on the My Phone Engineering blog, Microsoft also disclosed some features that will come with the full release, including ways to remotely make the phone ring or wipe its data and to find lost phones using GPS. The first generation of the service is expected to be released in final form this fall, around the time that Windows Mobile 6.5 phones come to market.