Can i connect an iphone 4s from sprint to tmobile?

I bought an iPhone 4s and it was previously connected to Sprint. I currently have T-mobile & i'm wondering if i can get the phone unlocked & use it with T-mobile. It does have a slot for a sim card. Can't i just get it unlocked and cut a T-mobile sim card to fit the slot? My friend bought one that used to be with AT&T but she bought it unlocked. She got it connected to Simple Mobile. All they did was cut their sim card to fit the slot & it works.

Go to a little side shop that says cellphone repairs (not a real chain place) and they can unlock it so you can change carriers.

Of course, you can. You just need to get the Sprint iPhone 4S factory unlocked and you can just put your T-mobile SIM in. Check online for factory unlocking Sprint iPhone.