How do I set up MobileMe on my iPhone?
UPDATE: MobileMe has been superseded by iCloud.
You must be a MobileMe subscriber to use MobileMe features on the iPhone. Once you've purchased a year of MobileMe service from Apple, here's how to set it up on your iPhone:
1. Touch Settings -> Mail, Contacts, Calendars
2. Select Fetch New Data -> Push ON
3. Navigate back to the Mail, Contacts, Calendars settings and choose Add Account
4. Choose MobileMe
5. Enter your account information and touch Save
6. Mail -> ON
7. Contacts -> ON
8. Calendar -> ON
9. Bookmarks -> ON
10. Find My iPhone -> ON
Apple recommends that you set a passcode to prevent an unauthorized user from turning off the Find My iPhone feature in the event your iPhone is lost or stolen.