Question about BlackBerry KEY2 LE

Also use the calendar with Google account. Without problems. You can also synchronise the calendar with Outlook.
What is much more important and better is the Firefox browser: no annoying advertisements, history deleted after logging out of the application.

I am logged in to the device with my Google account and can use the calendar. The Blackberry Calendar app is only an alternative to the official Google Calendar app. I was never asked for a server address when I started the app.