Can I use my home Wi-Fi on an iphone?

If I get an iphone used from Gamestop and put my AT&T sim card in, can I use my home Wi-Fi instead of getting a data plan? Thanks! (And I know I wouldn't be able to get Wi-Fi anywhere else, I'm okay with that.)

Yepp. I have Wi-Fi at my house and using it right now. That's totally fine

Yes you can, you don't need mobile network data to use internet on your phone. On your phone just go to Wi-Fi in settings, it will detect the Wi-Fi in your house, type in the password and you'll have it.

I don't think so. Because the iPhone has to be connected to a service with a plan, so it probably wouldn't work.

Yah you can

Yes, you can. Turn on the Wi-Fi via the phones menu and you can get Wi-Fi anywhere there's an open network.