Android phone scan from norton 360 for windows

I have norton 360 deluxe for windows on a windows 7 computer.

when i connect my android 13 phone to the computer via a USB cable, it discovers the phone and reaches its file contents as if it is a normal disk drive (it does not assign a drive letter though)

And when i want to scan the phone for viruses, i go to the scan options menu from the device protection and select drive scan but i cannot see my connected phone contents as a drive and cannot select it to be scanned.

 

what else can i do to scan my phone for viruses?