Meeting invites now include an attachment with the event details.
The industry standard calendar event file can easily be imported to any calendar
When people are invited to your meeting a special file will be included in the generated email which can be imported into their mobile phone calendars so that they don't miss your special event.
Create an event with summary, description time etc
Invite attendees in "Invite Others" tab
Enter event location
Click "Send Invitation" button in event screen
The Meeting.ics file which could be imported to attendee's calendar(iCal, google calendar etc) is attached to this email
Attendee received this email with the Meeting.ics attached in the mobile phone
Click the attached Meeting.ics to view the event details and add to calendar
Click the "Yes" button to notify organizer that you are going to attend the event