So I recently upgraded my iphone 5 to IOS7, then recently noticed that all the shared calendars I had which used to work no longer work….
After much digging there is a solution. By default it appears shared google calendars are no longer enabled by default for IOS7 (possible all older versions too).
In order to fix do the following:
- Login to your google account
- Go to https://www.google.com/calendar/syncselect
- Tick any shared Calendars you wish to view on your IOS device
- Save and then open your calendar app on your apple device and everything should be showing again.