Norton Security comes in several different versions; The differences are not great but helpful to know.

Norton Security Standard for 1 device.
If you only want to protect 1 device then buying Norton Security Standard is a solid and very affordable choice for your Mobile or laptop.

Norton Security Deluxe for 3, 5 or 6 devices.
Buying Norton Security Deluxe gets you the best security if you want to protect your mobile in addition to your laptop. Or your tablet and laptop. Any combination is possible.

Norton Security Premium for 10 devices.
Norton Security Premium lets you protect up to 10 devices, making it the ideal choice within a family. This version is the most comprehensive, because you also get 25 GB online backup. Order Norton Security Premium quickly and safely at 2GO Software UK UK.

Would you like a handy overview so you can see the differences between the three versions at a glance? You can do that too. We've created a Norton Security comparison chart that you can find here:
Comparing all Norton Security products