Norton Security Back up and Norton Mobile

I have downloaded "Norton mobile" onto my mobile phone from the 10 licence "Norton Security and back up" that I have on my  PC. (It took many attempts to do this as the link seemed not to work for some reason).

This seems to be a pretty basic version of mobile security. E.g. it has malware on but not anti virus. If I want the latter facility then I do believe that I have to purchase the Premium version of Norton mobile (after a free 30 day trial). Is this correct?

After paying the monies for the well marketed Norton Security and back up is this really good value as against 360? I ask this as the Registry clean out element of 360 is no longer there in Norton Security?

Also my mobile phone is not shown up on the list of devices. Any ideas why not or have I got this totally wrong?

Thanks for any advice