Does sprint do free trade ins on the iphone 5?

My iphone 5 has been having Wi-Fi issues since I got it the day it came out. I was patient and wait for a fix while upgrading my wireless router and changing some setting but it doesn't seem to be working. As of right now I'm ready to break my phone out of anger(I actually threw it on the floor and kicked it around a little, these things are durable!) I've talk to other iphone 5 owners and they said their wireless is fine. I have Sprint, would they do a free trade in or at least downgrade my phone to the 4s, which I know doesn't have Wi-Fi issues, for free?

Sounds to me your phone more than likely requires warranty repair. Check with Sprint about it or Apple.com.