Where can I go in Denver Colorado to sell my cell phone?
why not cell your phone online? many sites such as amozon and ebay offer this service. there are many secondhand deals there.
If you want to compare with the full variety of choices you should go to: http://tinyurl.com/bss758x
This site isn't in Denver but one of the guys that works there use to live in Denver. Try mrbuyback.com. They paid me quickly and a lot for my celly