Business

May 24 (Bloomberg) -- On today's "Off The Charts," Bloomberg chief markets correspondent Scarlet Fu examines the booming secondary market for used iPhones, allowing customers to cheaply trade up to a new model. She reports on Bloomberg Television's "Market Makers."

May 24 (Bloomberg) -- On today's "Off The Charts," Bloomberg chief markets correspondent Scarlet Fu examines the booming secondary market for used iPhones, allowing customers to cheaply trade up to a new model. She reports on Bloomberg Television's "Market Makers."