Carriers fight plan to require unlocking of phones 60 days after activation. T-Mobile and AT&T say US regulators should drop a plan to require unlocking of phones within 60 days of activation, claiming that locking phones to a carrier's network makes it possible to provide cheaper handsets to consumers. "If the Commission mandates a uniform unlocking policy, it is consumers—not providers—who stand to lose the most," T-Mobile alleged in an October 17 filing with the Federal Communications Commiss...