How to check which Samsung SM-G935F (S7 Edge) variant I have?

[King Mustard]

I am trying to register my phone onto Samsung's website but there are a ridiculous amount of variants of the SM-G935F.

About > Settings only appears to show "SM-G935F".

Any ideas?

EDIT: The SamMobile Device Info app on the Play Store found it for me.

 

[Randy 1]

The model number should be on the back of the phone in almost impossible to see and read small very small print. Close to the bottom on the back of the phone.
I had the same problem as you are with finding my correct model number. Later on when I was outside and forgotten all about it I noticed that there is information about my phone printed so small I can just make it out.
That's crazy Samsung, what's that about ?