Similar to Microsoft’s My Phone service, Google has announced Google Sync, available in Beta and support iPhone, Windows Mobile smartphone and SyncML compatible phones. Unlike My Phone service, Google Sync will only backup your phone contacts and calendar data with your Gmail account. Both your Gmail account and your mobile device will contain the same data after the synchronization.

According to the announcement

For iPhone and Windows Mobile devices, Google Sync allows you to get your Gmail Contacts and Google Calendar events to your phone. Once you set up Sync on your phone, it will automatically begin synchronizing your address book and calendar in the background, over-the-air, so you can attend to other tasks. Sync uses push technology so any changes or additions to your calendar or contacts are reflected on your device in minutes. The connection is always on so you don’t have to manually sync your phone after Sync has been set up. This means that when your colleague changes the time of the TPS report cover sheets meeting, you’ll know about it right away.

For devices that support the open SyncML protocol, Google Sync will allow for two-way contacts synchronization. If you’re a BlackBerry user, a version of Google Sync is already available.

 Check out the Google Sync video below