Cashify - Cashify has earned a good fame and name in the field of used smartphones, tablets, and laptops.
DigiCircle - DigiCircle is a multipurpose platform with the main purpose of serving as a platform for trading in used and second-hand stuff.
Cellular Country - Cellular Country is one of the largest and probably the cheapest sources over the internet for dealing in used smartphones, refurbished smartphones, and unlocked smartphones.
Gazelle - Buy and Sell your used cell phones and electronics. Sell your iPhone, Samsung Galaxy, iPad and more for cash, or buy used iPhones, iPads and other cell phones. More than one million customers trust Gazelle.
4Gadgets - 4Gadgets is the United Kingdom based smartphones selling and buying a platform that deals in used products only.
CashOn Pick - Cellular Country is not as greater used smartphones trading platforms as compared to others, but still, there are many factors that make it the best platform for getting used smartphones and also selling used or second-hand smartphones as well.