Can a Sprint iPhone 5s be unlock or not?

I got a iPhone from sprint last week and I wanted to know if I can find a way to unlock it. I really want to unlock it so in the near future I can use it on T-Mobile. Does anyone know anyway or information on how I can unlock my iPhone 5s so I can use it on another carrier. The phone is right now running on iso 7 didn't want to update.

Any phone can be unlocked and it is now ILLEGAL for the carrier people to NOT unlock it. According to Obama.

You can get the phone factory unlocked and use it with any GSM carrier. If you need help with getting the phone factory unlocked, mail me.