This depends on the settings of your phone and the permissions granted to the Accu-Chek SmartGuide app.

The app supports the use of features that allow the app to override Do Not Disturb or Focus modes if you choose to enable them. This feature is called Critical Alerts on iOS and Override Do Not Disturb for Android. The app prompts you to enable these settings during the initial setup, but you can also access them from the app menu at any time. If Critical Alerts or Override Do Not Disturb are disabled, the app notifications make sounds only if the phone is set to allow sounds.

If Critical Alerts or Override Do Not Disturb are enabled, the app notifications make a sound even if your phone is set to vibrate only or Do Not Disturb or Focus mode.