Filed under: CellphonesAn under-the-radar class action lawsuit against Sprint Nextel is winding its way towards a settlement this week, and it contains a pretty huge concession by Sprint: the company will unlock phones for both current and former customers, and will begin training its customer service reps on how to connect non-Sprint phones to its network. The settlement was tentatively approved by a California judge on October 2, but hasn't had a final approval hearing yet, according to Sprint -- but it's still a huge win for US consumers, who haven't been able to buy mainstream unlocked phones from any of the major carriers. Of course, since Sprint's
