Cell Giant is the best place to buy certified pre-owned smart phones. Our phones are not low quality refurbished phones that will break shortly after being “fixed.” Here at Cell Giant we believe that you shouldn’t have to spend an arm and a leg for a perfectly working cell phone. Before we founded our company, we always thought we were getting the best deal when it came to buying mobile phones. Little did we know that certified pre-owned smart phones work even better than refurbished smartphones, and you don’t even have to empty your wallet to get the like-new quality.