IPhone 5 with Verizon/t-mobile?

I have a Verizon iphone 5 and I got it from Gamestop. (Refurbished) I heard that all Verizon phones come unlocked out the box. But I haven't a clue if weather or not mine is… I really want to go to Tmobiles prepaid service but I don't know if it can be turned on at t-mobile. Can it? And are there any limitations if it can be?

No, no phone come "unlocked" out of the box, sorry. Plus is it a cdma only, or a cdma - gsm phone, it must be a gsm to work with t-mobile.

You need to go to your local t-mobile store then hope you can use this phone.