Shared Google Calendar Not Showing Up on My iPhone
If you have shared a Google calendar with someone but they aren't seeing the calendar at their iPhone or if you created a new Google calendar and it's not showing up - make sure to use SYNC SELECT. Login to the Google account that is experiencing the problem, then go to the following link:
https://calendar.google.com/calendar/syncselect
Make sure that the calendars you want to display at your iPhone are checked.
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