I recently upgraded to iTunes 11.0.1.12.
When I plug my iPhone 4 (iOS 5.1.1) into the computer, I noticed that under the "Info" tab, "Sync Contacts" and "Sync Calendars" don't have any options displayed, and it give me the message:
Your contacts (calendars) are being synced with your iPhone over the air from iCloud.
Over-the-air sync settings can be changed on your iPhone.
However, I do not know how to change those settings on my iPhone. What settings should I change to enable me to sync Contacts and Calendars through iTunes once again?
Best Answer
If you go to Settings > Mail, Contacts, Calendars > iCloud (should be the first account) and scroll down to Contacts.
When you scroll to "Contacts" you must slide it off. I did this by sliding the "Contact" button from right to left and swiped away the green. I was prompted to "What would you like to do with the previously synced iCloud contacts on your iPhone. I chose "Keep on My Phone".
Then you can use iTunes like you used to do and select the Contacts you want to be synced. I prefer this way.