Can you use a boostmobile sim card in your iPhone 3g?

No, Boost Mobile phones use an iDEN wireless network. iPhones use a GSM network. While both use sim cards their networks are totally incompatible and you cannot exhange one si (MORE)

Does iPhone 3gs have a contract?

well it depends whether you want it to or not. if your carrier... well, carries the iphone than usually you can buy the phone with a fixed three year contract, which will cost (MORE)

Can you use a different sim card on your iphone 3G?

Hey It depends on your location and your network For example, in the US, AT&T have a deal with Apple for a 2 year contract. Now, you can always jailbreak your iPhone and (MORE)