http://www.google.com/support/mobile/bin/answer.py?answer=138740&topic=14252http://www.google.com/support/mobile/bin/answer.py?answer=139206
Google Sync: Setting Up Your iPhone or iPod Touch
1. Open the
Settings application on your device's home screen.
2. Open
Mail, Contacts, Calendars.3. Tap
Add Account....
4. Select
Microsoft Exchange.
Enter Account Info
5. In the
Email field, enter your full Google Account email address. If you use an @googlemail.com address, you may see an "Unable to verify certificate" warning when you proceed to the next step.
6. Leave the
Domain field blank.
7. Enter your full Google Account email address as the
Username.
8. Enter your Google Account password as the
Password.
9. Tap
Next at the top of your screen.
9a. Choose
Accept if the
Unable to Verify Certificate dialog appears.
10. When the new
Server field appears, enter
m.google.com.
11. Press
Next at the top of your screen again.
12. Select the Google services you want to sync.
13. Unless you want to delete all the existing Contacts and Calendars on your phone, select the
Keep on my iPhone option when prompted. This will also allow you to keep syncing with your computer via iTunes.
If you want to sync only the
My Contacts group, you must choose to
Delete Existing Contacts during the Google Sync install when prompted. If you choose to keep existing contacts, it will sync the contents of the "All Contacts" group instead.
You've set up Google Sync for your iPhone. Synchronization will begin automatically if you have Push enabled on your phone. You can also open the Mail, Calendar or Contacts app and wait a few seconds to start a sync.
Next
choose which calendars to sync, if you'd like to enable multiple calendars.
Mail, Calendar, & Contacts Setup: Choosing Which Calendars to Sync
Google Sync allows you to choose up to 25 Calendars with the Calendar app on your iPhone (on iPhone OS 3.0).
To select which calendars to sync to your iPhone, follow the steps below:
- Open the Safari browser on your phone and go to http://m.google.com/sync.
- Sign in with your account and select your phone from the list of devices you've set up for Google Sync.
- Bookmark this page so you can return to it easily.
If you use Google Apps, follow these steps:
- Open the Safari browser on your phone and go to http://m.google.com
- Click on Google Apps user? at the bottom of the screen.
- Enter your domain name (e.g., YourDomain.com).
- Click the Sync icon in your domain area (this section has a green background).
- Sign in if required.
- Select your device to configure Calendars.
