On the iphone where is the sim card locatied?

On the iphone where is the sim card locatied?

On the iPhone 5 it's on the right side of the phone, you have to get something small enough to fit in the hole that's there and put it in and the SIM card thing will pop out. And on the other iPhones I'm pretty sure it's at the top.

IPhone- Top
iPhone 3G- Top
iPhone 3GS- Top
iPhone 4- right side
iPhone 4S- right side
iPhone 5- right side

You need either a small paper clip or a SIM removal tool to open it. I got a SIM removal tool from Apple when I had to ship my phone off to be repaired

IPhone 2G, 3G, 3GS - top
iPhone 4, 4S, 5 - right (GSM models)

Take off your iPhone cover and there will be this little rectangle thingy. You will find it. Use a paper clip or your nail or something else to open it up.