Users are now purchasing refurbished smartphones more than ever due in part to slowing innovation and marginal design changes on the latest models. The hardest hit are mid-range smartphones as used high-end models from Apple or Samsung can be had for about the same price. Why purchase a brand new flagship when last year's model is very nearly the same for hundreds less?
https://www.notebookcheck.net/Refurbished-smartphones-are-selling-almost-five-times-faster-than-the-year-before.289240.0.html