Note: The Google Calendar app;syncs past events up to one year.; You need to be sure to select your Google account as the location where you save the events created on the phone. If you create the event in the "phone" calendar, it will not sync with the Google Calendar. If you store and edit your contacts in;iCloud;instead of another place, like;On My Mac, Exchange, or Google, then iCloud automatically updates your contacts. If you use multiple accounts on your Mac like iCloud, Gmail, and Yahoo