Can i update my iphone without removing the sim card? I have simple mobile?

I want to update my iphone 4 but i have a SIM card and i don't know if to update it with or without the SIM card… Help! My phone company is simple mobile.

Please ask this question elsewhere as it is not welcome here. But I can give you one piece of advise. Enter your settings application. When you have arrived at settings, you will be able to update to iOS 7 there.

If you mean you're eligible to upgrade through your carrier to a new phone, just take it into the store with you and do it.
If you have to do a get teh phone in the mail kind ofthing they'll send you a new phone with a new sim you just have to activate it once it arrives - most of the time anyways.
If you're just looking to update to IOS 7 or something then you don't have to mess with the SIM card at all, just run the update and enjoy the new IOS firmware.