Getting Started
1. Open the
Settings application on your device's home screen.
設定を開きます。
2. Open
Mail, Contacts, Calendars.
「メール/連絡先/カレンダー」を開きます。
3. Tap
Add Account....
アカウントを追加をタップします。
4. Select
Microsoft Exchange.
Microsoft Exchangeを選択します。



Enter Account Info
5. In the
Email field, enter your full Google Account email address.
「メール」には好きな名前を入れます。
6. Leave the
Domain field blank.
ドメインは空白のままです。
7. Enter your full Google Account email address as the
Username.
「ユーザー名に」Googleアカウント(***@gmail.com)を入力します。
8. Enter your Google Account password as the
Password.
パスワードを入力します。
9. Tap
Next at the top of your screen.
「次へ」をタップ。
9a. Choose
Accept if the
Unable to Verify Certificate dialog appears.
もしワーニングが出てきたら「Accept」をタップ。
10. A new
Server field will appear. Enter m.google.com.
「サーバー」に「m.google.com」と入力します。
11. Press
Next at the top of your screen again.
「次へ」をタップ。


12. Select the Google services you want to sync.
同期したいサービスを「オン」にする。
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.


Next
learn how to choose which calendars to sync, if you'd like to enable multiple calendars.
Google 官网原文:
Google Sync: Set Up Your iPhone or iPod Touch