"In order for Android 10 to detect BLE devices, the permission must be set to ACCESS_FINE_LOCATION (and not ACCESS_COARSE_LOCATION)."
These permissions are declared in the Manifest of your APK:
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/> <uses-permission android:name="android.permission.INTERNET"/> <uses-permission android:name="android.permission.BLUETOOTH_ADMIN"/> <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/> <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/> <uses-permission android:name="android.permission.BLUETOOTH"/>