You need to first connect your scheduler with your Google Calendar so that your appointments are sent automatically to your Google account.
In order to receive appointment SMS or text messages on your cell phone, you need to register the cell phone number in Google Calendar. Just sign in, click Settings on the top-right of the page, and go to the Mobile Setup tab to perform your registration and verification as instructed.
Any time you want to check your own schedule, send a text message containing one of the following single-word-commands to the SMS address 48368 (save this number on your cell!):
next: request your next scheduled appointment.
day: request all of your scheduled appointments for today
nday: request your events scheduled for tomorrow (next day)
And voila! Your appointment info will be texted to your cell pone instantly!