I have instructions and a video to show you how to add our NEW google calendar to your iPhone. Again, this is a new calendar that needs to be subscribed to and the old one can be thrown out or unsubscribed. We will also make a video showing android devices as well. Hope this helps!
1. Copy the above link while on your iPhone
2. Go to settings
3. Scroll and click Mail, Contacts, Calendars
4. Click Add Account
5. Click Other (it is the bottom choice)
6. At the bottom, click Add Subscribed Calendar
7. Paste the previous link in the blank space labeled "server"
8. Allow the phone to verify and save