Interesting tidbit: MetroPCS, a small, mostly budget/pre-paid carrier with
just over a million users 9.5 million users (compare that to AT&T's 100 million), said in its response that it fulfilled "fewer than 12,000 requests a month" between January 2006 and May 2012. Assuming, conservatively, a figure of 11,500 (it's likely more; "fewer than 12,000" implies a figure close to 12,000), that means an annual figure of 138,000, averaged between 2006 and 2012. AT&T, which is a hundred times bigger, received 260,400 in 2011 alone. MetroPCS's figure is likely low, since the number of requests raised significantly between 2006 and 2012 among all carriers and the company provided a mere monthly average. And yet AT&T had less than twice the requests of MetroPCS. Update: MetroPCS subscriber number updated to be less wrong.