Companies That Buy Old Cell Phones -

: A popular comparison site that aggregates quotes from dozens of vetted buyers to ensure you get the highest possible price.

These companies offer a "hands-off" experience. You get an online quote, mail your phone for free, and receive cash after an inspection.

There are three primary ways to turn your old phone into value: specialized buyback sites, manufacturer/carrier trade-ins, and peer-to-peer marketplaces.