Find this tip and many more in Tony’s Tips for iPhone User’s Manual, a $2.99 application for your iPhone by Tony Bove.
One frequent problem I have is that the Calendars on my iPhone lag behind my computer’s calendars — sometimes seriously enough that I don’t have the appointment’s information in my iPhone as I dash off to the appointment.
Life passes swiftly by, and we must keep up. I sync regularly to the MobileMe “cloud” from my computer, and I generally use my computer to enter or change calendar entries. If something happens to corrupt my MobileMe cloud data, the odd occasions I entered through my iPhone are not worth troubling over. Better to simply overwrite the MobileMe data from my computer: replace the entire cloud with an accurate version of the cloud.
You know how to do that: open MobileMe (in System Preferences on a Mac, or Control Panel in Windows) and click the Sync tab, and then click the Advanced button. Select the computer you are syncing from in the list at the top, and click Reset Sync Data.
In the dialog that appears, choose an option from the Replace pop-up menu:
- On a Mac your choices are All Sync Info; or Bookmarks; Calendars; Contacts; Key Chains; Mail Accounts; or Mail Rules, Signatures, and Smart Mailboxes.
- In Windows, your choices are All Sync Info, or Bookmarks, Calendars, or Contacts.
Then click the arrow underneath the cloud icon to change the animation so that the data arrow points from the computer to the cloud. Finally, click Replace.
This replaces the data in the MobileMe cloud with the data on your computer. You can also use these steps to go in reverse — replace the data on your computer with the data in MobileMe. To do this, click the arrow so that the animation points the arrow from the cloud to the computer.
The next step is to re-sync your iPhone to the new MobileMe data. Choose Settings>Mail, Contacts, Calendars from the iPhone Home screen, and then touch the email account associated with MobileMe — the one that also has Mail, Contacts, Calendars, and Bookmarks in the subtitle.
The MobileMe account is the one with Mail, Contacts, Calendars, and Bookmarks in the subtitle.
In the settings screen that appears for your MobileMe mail account, touch On for any item (such as Calendars) to turn syncing Off:
The MobileMe account settings screen.
A warning appears telling you that the synced information will be removed from your iPhone, and you can touch the Stop Syncing or Cancel buttons:
Turn off sync, or touch Cancel.
Touch Stop Syncing to turn off synchronization. At this point, the items you chose (Mail, Contacts, Calendars, or Bookmarks) are deleted from your iPhone.
After returning to the settings screen for the MobileMe mail account, touch Off for the item (Mail, Contacts, Calendars, or Bookmarks) to turn it back On. The items you turn On will re-synchronize with data from the MobileMe cloud.
If you prefer, leave any item’s setting Off and re-sync that item using iTunes. For example, if you leave Calendars set to Off, you can then sync your calendars to your iPhone using iTunes — skipping MobileMe in the process. The choice is yours.