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iPhone + iPad = duplicate contacts / calendar items

17087 Views 13 Replies Latest reply: Nov 27, 2010 6:44 AM by mjiclk RSS
Jasonxoc Calculating status...
Currently Being Moderated
Apr 14, 2010 9:52 AM
Hey guys,

I got mobile me, an iphone an ipad, a macpro, macbook pro and an imac. I turned on syncing and now on my iphone and ipad i have duplicate contacts and duplicate calendar items.

I dont even know where to start to solve this. If its common and anyone has a quick answer, that'd be cool.
Mac Mini Media Center, MBP, Mac OS X (10.6.2)
  • Allan Sampson Level 10 Level 10 (122,165 points)
    Currently Being Moderated
    Apr 14, 2010 10:10 AM (in response to Jasonxoc)
    This means you are syncing contacts and calendar events over the air with your MobileMe account on both devices (your iPhone and iPad), and syncing contacts and calendar events direct with the Address Book and iCal on your Mac via the iTunes sync process. Doing both is not required and only duplicates contacts and calendar events on your iPhone and iPad.

    With your iPhone connected to iTunes, under the Info tab for your iPhone sync preferences deselect Sync Contacts and Sync Calendars followed by selecting Apply.

    On your iPhone, go to Settings > Mail, Contacts, Calendars.

    Select your MobileMe account.

    Turn Contacts and Calendars off for over the air syncing. A warning message will be provided indicating this will erase all contacts and calendars/calendar events downloaded from and being kept synchronized with your MobileMe online address book and calendar. A prompt will also be provided to save this data locally on your iPhone. Decline this prompt. This will not delete the contacts and calendar events synced direct with the Address Book and iCal on your Mac via the iTunes sync process.

    Follow this by turning Contacts and Calendars back on for over the air syncing. You will be provided a merge prompt, which you want to select.

    This will get rid of the duplicates.

    Repeat the same with your iPad.
     MacBook Pro 15" Intel Core 2 Duo/2.53GHz/4GB RAM/500GB HD, Mac OS X (10.6.3),  iPod w/Video 30GB,  iPhone 3G 16GB
  • gcochran Calculating status...
    Currently Being Moderated
    Apr 18, 2010 10:46 PM (in response to Jasonxoc)
    Thanks so much for the solution to this really annoying problem. I was an idiot and had checked the Sync xxxx options on the Info tab in iTunes thus causing my duplicate entries. It is really great to know that with MobileMe you can just toggle the duplicates off, ask the iPad to remove them, then turns them back on and then merge them. The solution posted here worked perfectly for me.
    Mac Pro, Mac OS X (10.6.3)
  • gedmont Calculating status...
    Thank you very much for a really helpful post.
    iMac 2.4GHz Intel Duo, Mac OS X (10.5.7)
  • OKAlcantara Calculating status...
    I am very thankful for this post. But, I have 2 questions:

    After deselecting Contacts & Calendars from both iTunes and MobileMe/iPhone settings, you say to follow this by turning Contacts & Calendars back on for air synching, and that a merge prompt will come up. When turning back on for air synching, am I turning on from iTunes? or from the iPhone Mobile Me Account? or from online mobile me?

    Then, when I repeat for my computer, do I repeat by turning back on within iTunes? Sorry to need such specific directions...!!
    iMac, iPhone, Mac OS X (10.5.8)
  • Allan Sampson Level 10 Level 10 (122,165 points)
    Sorry, but I can't provide the detailed step by step instructions included with my previous post any clearer.

    What I provided is as detailed and specific as it gets.
     MacBook Pro 15" Intel Core 2 Duo/2.53GHz/4GB RAM/500GB HD, Mac OS X (10.6.3),  iPod w/Video 30GB,  iPhone 3G 16GB
  • surfingatco Calculating status...
    Thanks, worked a treat!
    Macbook Pro, Mac OS X (10.6.3), iPhone 3G, iPad Wi-fi 32g
  • R.W. Baker Calculating status...
    Thanks from another clown who accidentally created duplicates! Your solution worked like a charm.

    iMac, Mac OS X (10.6.3), iEverything
  • volksapple Calculating status...
    Thank you so much for this post. I used it to solve the duplicates problem on my iPad and it worked perfectly!
    MBP, iMac, iPhone, iPad, etc. etc., Mac OS X (10.6.3), 24" iMac
  • John Kitchen Level 3 Level 3 (635 points)
    Dear Allan, thank you very much for this post!

    (And I'm glad I'm not the only clown who got himself into this mess)
    MacBook Pro, Mac OS X (10.5.7), 15" Late 2008, 4GB/750GB, 2.5TB external via Airport Extreme
  • Plasman100 Calculating status...
    You should write tech notes for a living! thanks for the clarity!
    iMac, Mac OS X (10.6.4), iPad, iPhone 3G
  • Transmetaman Calculating status...
    Another Thank-you! Good Info and well explained.
    Pro, Mac OS X (10.6)
  • mjiclk Calculating status...
    I've been working on this for hours and no luck. When I'm in iTunes under the Info tab, sync calendars was never checked off.. It was always set to sync via mobile me so I cannot understand why I am still getting multiple calendar events. When I go into settings and shutoff mobile me for calendars on both my iPad and iPhone I select delete all calendar events from both devices I then turn back on mobile me and I have even more duplications. What am I doing wrong here? On my mac book I keep getting a pop up from sync alerts notifying me I having 2000 changes to my calendars which I do not sync I just ignore, thought that might be worth mentioning.
    MacBook, Mac OS X (10.5.6)
  • mjiclk Level 1 Level 1 (0 points)
    Currently Being Moderated
    Nov 27, 2010 6:44 AM (in response to mjiclk)
    Ok I came up with something that worked for me. I turned off calendars on both my iPad and iPhone which deleted the calendars in both. Then from my MacBook I went to iCal, preferences, general and click MobileMe, then sync, Advanced, click whatever computer you are syncing from then reset sync data. In the drop down bring up calendars.

    I then hit the arrow that allows me to replace all contacts on mobile me with sync info from this computer.

    That worked for me.
    MacBook, Mac OS X (10.5.6)


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