Question about how to use a real UE connect to my5G-core via N3IWF

I have a question about the using real UE with N3IWF.

I already tested well with my5G-non3GPP-access and my5G-core.
Can a real UE(smart phone) connect to my5G-core via N3IWF?
The real UE include a sysmocom USIM card.
I want to use the real UE instead of my5G-non3GPP-access.

We don’t have real UE, so we’re not sure about this.