What if I Don't got no simcard for the Iphone 4 but it requires me to put one in?

OK well I forgot my password on my Iphone so I had to reset everything but now it won't let me go thru without putting in a Sim card but I Bought this phone without the Sim card a couple days ago is there anyway you can skip this

Just go to the cell phone store and ask them to put in a sim card… And tell them that in the future you will get a plan but for now you just want to test out the phone.