Sprint iPhones flashed to another carrier?

I have no idea where to begin. I HATE sprint. They are ridiculous expensive and the coverage sucks. I have an iphone 5, 4s, and 4. How do I go about flashing it to another carrier? Who do I contact?

You would have to contact Sprint. There may be some methods out there to unlock the phone but if you break your contract with Sprint then no other carrier will take your phone. You can also only flash it to another CDMA network, which in the US is only Verizon. There is no way to unlock it to Tmobile, ATT, or any GSM network.

Hope this helped!

if it is a new iphone4 and says sprint and you dont have an account with sprint, how do you get the cdma flashed so you can have verizon as a carrier