Reuse, on the other hand, currently offers a solid profit margin. Refurbishers that collect handsets for reuse or recycling are profitable as long as their reuse yield is above 50%. Since cell phone owners tend to keep their handsets beyond their use time and resale values of reused handsets decline quickly over time, the main challenge of take-back enterprises is to reduce the hibernation period of end-of-use handsets in the bottom drawer of their owners. More research should thus be conducted to assess how effective different reverse logistics strategies are in reducing the time between product end of use and return.