How can I delete a calendar on my Huawei P20? The said calendar is not visible on calendar.google because it is on the phone (called "Phone"). How can I delete this calendar?
Since this app will be a system app, you can only delete it with root privileges. You may be able to disable the app. As a result, it is no longer displayed in the menu.
I'm not sure if my problem was understood. Here is a screenshot of my screen. I mean the bottom three calendars.
I looked at the picture. I now understood what you meant. Unfortunately I can't help you there.