I signed up for Mac MobileMe after it was first released and I am hooked. I love being able to sync photos, contacts, and calendars in the cloud. Everything is automatically 'pushed' to your devices to keep your constantly changing information in sync. Add a new contact and there it is, already in sync on all of your Mac devices and in Outlook on your PC. I love not
having to connect my iPhone to the computer to sync data.
The new Find My iPhone is a great addition. If you misplace your iPhone, you can sign into your MobileMe account from another device and find its location. I tested it and it works like a charm.
Unfortunately, with anything tech related, if the device settings are not correct, problems are likely to occur. I have been walking around with duplicate iPhone entries in my address book for quite some time. Not all, but most of my contacts were duplicated. My Calendar also had a number of duplicate entries. The following is a description of what I did to get rid of the duplicates and set the data straight on ALL of my devices.
According to Apple, duplicates can occur when you sign up for MobileMe. A dialog appears asking you to merge your data. If you choose NOT to merge, the calendars and data will be kept separate causing duplicate entries. The duplicate information also occurs if you have iTunes set up to sync calendars and contacts. It is logical that you DO NOT need to sync calendars and contacts in iTunes, if you have MobileMe.
Before you do anything, sign into MobileMe and determine where your Contacts and/or Calendars are duplicated. Where is the data correct and up to date? Is it in MobileMe, on your Mac, or in your iPhone? Once you have determined exactly where the problem is, then you can start troubleshooting.
First, you should back up your Calendar and Contacts by launching the application and choosing File and Export!!! You can NEVER have enough backups!
note: If you have corrupt data in all places, I suggest you call an Apple Support technician to assist in more advanced troubleshooting since multiple variables are involved. Ultimately, you might have to restore your iPhone to factory settings and re-enable your MobileMe account and then do further troubleshooting to resolve the issues.
This deletes your iPhone contacts. Don't worry, the contacts are still in your MobileMe account in the cloud.
Next, turn Contacts slider back On to re-enable syncing with MobileMe. Choose to Merge with MobileMe.
Voila! Your contacts should be back and duplicates gone.
Sometimes while syncing with MobileMe, you may receive a message that the system is unable to sync because of inconsistent data. Try to Reset Sync Data on Mobile Me if your data is up to date and correct on either MobileMe or your computer. note: if you have the new MobileMe Calendar, don't try resetting your sync data to reset your calendar. You should use these Apple troubleshooting steps for troubleshooting the new MobileMe Calendar, http://support.apple.com/kb/TS3397.