AT&T Customers Embrace iPhone 4S with One Million Activations

But one question remains: which cell phone carriers have taken the rest?

AT&T

is having a great day this morning after announcing that one million iPhone 4S customers have chosen its service over Sprint

and Verizon

. This might come as a surprise to those who expected Sprint to clean up, but it's important to remember that AT&T's success only accounts for one-fourth of the iPhone 4S activations. There are still another three million out there in the world, with their specific carries not yet identified. “It's no surprise that customers are clamoring for iPhone 4S and they want it to run on a network that lets them download twice as fast as competitors,'” Ralph de la Vega, President and CEO, AT&T Mobility & Consumer Markets, said on the

. It'll be interesting to see if Sprint or Verizon respond with activation stories of their own. Via