I have for a long been a Google Apps user and synchronizing e-mail, calendars and contacts with my iPhone works flawlessly. My partner and I are sharing calendars but until today it has been impossible to view my partner’s calendar on my iPhone. The reason for this is that the “administer security controls” where you can add shared calendars is “are only available for Google Apps Premier and Education customers” (look at the bottom of the page).  Today I found a workaround, at least for iPhone users but I guess it will work for every smart phone that support CalDav calendar synchronization. This is how I did it:

1. Go to http://support.google.com/mobile/bin/answer.py?hl=en&answer=151674 and follow the instructions on how set up your (i)phone’s CalDAV synch.
2. Open up https://www.google.com/calendar/hosted/ditt_domene/iphoneselec and select the calendars you want to synch
3. Go to your phone’s calendar settings and select the calendars you want to view. On an iPhone: Open up your calendar, click on the “Calendars”  button in the upper left corner, select the calendars you want to view.

That’s it!