hello, the Z Flip7 is Dual SIM compatible, which means you can use an eSIM and a physical nano-SIM at the same time.

It has a functioning NanoSIM compartment ;)

It has a nano SIM. But you can also add an eSIM. So both.

I think this was emphasised as a "highlight".
The SIM slot is at the bottom of the specifications.
It is there and works perfectly. I don't know where it says that it's not usable or doesn't work.
Works tip top for me 👍