I was wondering if it is possible to use 3G on an iPhone 4s without a sim card?

I have a iPhone 4s I use as a iPod. I know that my iPhone has 3G. When I go to Settings > General it says to go to Cellular I need a sim card. Is there anyway to use the 3G without the need of a sim card?

You can't use 3G data without paying for a data plan.

Without a plan/SIM card you can only get Wi-Fi.

Well no. The 3G coverage comes from the carrier & of course that coverage comes via the SIM.

So, no SIM, no service, no 3G.

No, It won't be associated with a carrier. You have to pay for a data plan.

No, you need to get a data plan from your carrier to use 3G.