Where can i trade my s4 in for an s6, and how much will it cost?

[AC Question]

A specific name of a place, for example best buy, radio shack, or something of that matter. And the number/address where the place can be reached. Because i really want to trade in my s4 for the s6. So i need to know where i can do it and how much money it will cost.

 

[B. Diddy]

Welcome to Android Central! It would help to know if you have any specific carrier in mind.

Here's the T-Mobile site where you can get an estimate of how much credit you'd get: https://www.t-mobile.com/cell-phone-trade-in.html