G Suite Update blog that as of January 7th you'll no longer be able to receive text (SMS) notifications about Google Calendar events.
Until I read the notification this week, I did not realize that getting SMS notifications was even still an option. I thought it had been phased out years ago with the launches of the Google Calendar Android and iOS apps that provide push notifications to remind you of Calendar events. You can also get event reminder notifications on your desktop and via email.
You can learn more about Google Calendar in my recorded webinar, Getting Organized With Google Classroom, Calendar, and Keep which is a part of my Black Friday bundle of PD webinars.