I just installed Mavericks. I have an old iPhone 3GS and it is running iOS 4.1.

Since updating to Mavericks, iTunes syncs everything but Address Book and Calendar, however under OS X 10.8 everything was syncing fine.

Do I need to do something special to make it sync above things?
Am I the only one with the issue?

Additional information: It seems like there is no option in iTunes for contacts and calendar synchronization either. It is like it just disappeared.


In order to sync contacts and calender, you have to use iCloud now.

With iTunes 11.1.2 and OS X Mavericks they(Apple) disabled the option to sync locally according this Document.

Note: These instructions apply only if you use OS X v.10.8.5 or earlier. If you use OS X Mavericks v.10.9 or later, your contacts, calendars, and other info are updated on your computers and iOS devices via iCloud. For more information, see iCloud Help at icloud.com.

  • 1
    You are right. But what a bullsh*t apple pulled. I mean I don't have iCloud (old phone) nor I want to use it... Now there is no way to Sync contacts.
    – MeIr
    Oct 27 '13 at 19:50

I had the same problem. So I wrote a small open source app for myself, as a temporary workaround.

It's in the iOS AppStore now, for free: https://itunes.apple.com/us/app/devicesync-for-ios/id737867459?mt=8

Please read the AppStore app description before using it!

In the current form it simply "copies" calendar entries from iOS to OS X, deleting calendar entries on OS X first.

Thus, be sure to add and update your calendar entries on iOS only!

But still, this works well enough for me.

Three days ago, I pushed version 1.1 to the iOS AppStore, should be available sometime next week. It makes the "sync" time range configurable.

As time permits, I will add support for contact synchronization and improve merging behavior of calendar entries.

You have to get the corresponding OS X app from https://github.com/yep/DeviceSync-for-OS-X/releases

Please open the OS X app by holding the control (ctrl) key and then double-clicking the icon. For more information, see https://support.apple.com/kb/HT5290.

This app is open source and hence a collaborative effort. If you are a developer or know some iOS developers, feel free to add missing functionality (send a pull request at github).

See https://github.com/yep/DeviceSync-for-OS-X and https://github.com/yep/DeviceSync-for-iOS

I have an old iPhone 3GS and it is running iOS 4.1.

Now iOS 4.1 is a problem: it does not support ARC. I think it should be possible to update to 6.1 on the 3gs. It would be a lot easier to port this app to 6.1 than to 4.1


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