How can I tell if my phone has been updated

Here, I corrected this for you.....

Settings>General>About>Software Update

The OP may not know what the highest level iOS they can use on their phone. If they tap Software Update, it will tell them if their phone is updated.

Yes, that's another way to get the info the OP is looking for.

But if s/he decide to do it using your path, s/he won't find that option.

The correct path would be: Settings>General>Software Update.

Take care, r.... :)

Giulio

Reread what I posted. Unless I'm just not reading you correctly, I believe I said Settings > General > Software Update.

However, in your first post, you said, Settings > General > Software Version.

Settings>General>About>Software Version