7 Replies Latest reply: Jun 6, 2008 9:43 AM by Seamaster73
GregM Level 2 (175 points)
A friend of mine is getting an error message--"iTunes could not sync contacts to the iPhone "[Name]" because the iPhone disconnected." My friend was running Mac OS X 10.5.1 when this error occurred; I updated her to 10.5.2, and it's still happening. (She's running iPhone 1.1.3.) I also tried two different iPod cables; that didn't fix the problems.

This used to work; now it doesn't. Any ideas?


G5 Dual 2.5 GHz, Mac OS X (10.5.2)
  • Damon M. Level 4 (3,695 points)
    One thing that could cause this error message is corrupted data on the iphone or computer.

    Close itunes and disconnect the iphone.
    Now open isync in the applications folder.
    Once isync is open, open the isync preferences.
    Click the button to reset sync history.
    Once sync history is reset, quit isync and open itunes.
    Open the itunes preferences and go to the syncing tab.
    Check the box to disable automatic syncing for all ipods and iphones.
    Connect the iphone and go to the info tab.
    Go to the bottom of the info tab and check the box to replace all contact data on the iphone with what is in the computer.
    Now click apply on the bottom right corner of itunes.

    If this does not work, open address book and create a new group.
    Add 5 - 10 contacts to that group.
    Now go into itunes with the iphone connected and set the iphone to only sync to that particular group.
    if the iphone syncs ok, add some more contacts and sync again.
    If the iphone does not sync, remove some of the contacts and sync again.
    Keep going through this process until you narrow down which contacts are causing the problem.

    Hope this helps.
  • GregM Level 2 (175 points)
    I did a "reset" on the Contacts info using iTunes, and that fixed the problem. (That was a step I was a little scared to take earlier since it was my friend's phone and not mine...but that did it.)

  • NanoICON Level 1 (10 points)
    That worked for me. Thank you!
  • lclark Level 1 (0 points)
    I got there by just deleting the groups i had in the Ical, and then adding back.

    I took it to the Apple store and we got a sample to sync, yet when i got home it did not take the entire group.....

    any suggestions on how to get to sync directly with Entourage instead of syncing first to Ical? I get 3 Christmas appointments>>>ARGH
  • BrF11201 Level 1 (0 points)
    Worked for me, as well. Thanks.
  • Bob Ayer Level 1 (5 points)
    Many thanks - you have just fixed same problem for me.
  • Seamaster73 Level 1 (5 points)
    Thank you, Damon. This advice fixed the same problem I have been having recently, except mine was with calendars rather than contacts. I appreciate you taking the time to post it.