
Certification and standardized grading can bring much-needed transparency to the refurbished device market, according to the CEO of Phonecheck. | Daniel-Krason/Shutterstock
I used to run a business that acquired and sold pre-owned mobile devices. It was a great model – we could buy less-than-perfect phones and other devices inexpensively, and with a little effort and elbow grease, sell them for a bit more.