Best Buy Mobile will soon launch a buy back program for smartphone users who constantly upgrade their devices before they're out of contract, according to a leak from BGR. Full details aren't known, but the Buy Back program will give users the option to pay $60 when first purchasing their handsets to get the option of trading in their handsets between one and six months of ownership and get back 50 percent of the phone's original full retail value. The refund amounts get smaller for longer periods, and all assume that the handset is in good condition.