Can you unlock/jailbreak a Sprint Iphone 4S so it can be used with T-Mobile?

My brother is giving me his Iphone 4s that he is using with Sprint, but I have T-Mobile. Can it be unlocked and jailbroken so I can use it with T-mobile?

Yes. Simple as that.

No, you can't. The sprint iphone will be a CDMA phone. T-Mobile uses a GSM network and the sprint iphone won't work on the T-Mobile network.

The previous answer was wrong…