Setup Google sync on your Iphone with 3 Steps
1 – Backup Your IPhone
2 – Setup Iphone with Sync
3 – Manage Calendars:
To select which calendars to sync to your iPhone, follow the steps below:
1. Open the Safari browser on your phone and go to http://m.google.com/sync.
2. Sign in with your account and select your phone from the list of devices you’ve set up for Google Sync.
3. Bookmark this page so you can return to it easily.