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# About iSync

iSync helps you sync the contact and calendar information on your Mac OS computer and devices, such as an iSync-compatible Bluetooth or USB mobile phone.

iSync compares the contact and calendar information on your computer with the address and contact information on your devices, and then updates your computer and devices to have the same information. For example, if you change someone’s email address on your phone and then use iSync to sync the phone with your computer, the email address will be changed in any applications on your computer that work with Mac OS X sync services (for example, Address Book), and have a record for that same person.

If you change the same piece of information in more than one place, iSync updates all your devices with one version of the information, and stores the other versions. You can resolve these conflicts at any time by using the Conflict Resolver (available in the sync status menu on the right side of the menu bar.

For iSync to work, you need to store your contacts and calendar information in an application that works with Mac OS X sync services, such as Address Book or iCal. You also need to set up your devices in iSync on the computer with which you plan to sync. It’s important that you sync your phone with only one computer, as syncing with more than one computer can cause problems. After your devices are set up correctly, you’ll see them in the iSync window.

For a list of devices that work with iSync, visit the iSync website at www.apple.com/isync/devices.html.

If you have a MobileMe subscription, you can also sync information across multiple computers using the MobileMe pane of System Preferences. For more information, choose Help > Mac Help in the Finder, and search for MobileMe.

For more information about iSync, visit the iSync website.

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Apple iSync webpage

iSync Support website