Background location access 

TARGET 30 - The following behavior changes apply exclusively to apps that are targeting Android 11 or higher.

To access device location in the background users need to grant ACCESS_BACKGROUND_LOCATION sensitive permission since Android 10.

App targeting Android 11 and above: 

i) You can not ask the foreground location and background location at the same time, the system throws an exception.

ii) Requesting ACCESS_BACKGROUND_LOCATION permission redirect the user to the application permission screen to grant permission.

App targeting Android 10: 

i) You can ask.

ii) Display system dialog within the application.

To access location in the background, the User must have selected Allow all the time.