![Cell phones stacked on a table.](https://resource-recycling.com/e-scrap/wp-content/uploads/sites/2/2021/02/devices-20210217-By-Sonyerry-shutterstock_558693364-web.jpg)
In the annual review of company data Hyla noted that trade-in activity was slower for the full year, but that it picked up significantly in the fourth quarter. | Sonyerry/Shutterstock
Mobile device trade-ins are older than they used to be, according to recent figures from device trade-in firm Hyla Mobile. Devices are also largely retaining their value.