The iPhone 4S has been a tremendous success for all three of the US carriers that currently sell the handset. But it seems that AT&T is getting a little more success compared to Apple’s other two iPhone 4S partners.

AT&T today announced that it has activated more than one million iPhone 4S devices as of Tuesday, making the iPhone 4S launch the most successful launch in the carrier’s history… 

President and CEO of AT&T Mobility Ralph de la Vega claims the reason for this success is AT&T’s HSPA+ network speeds:

“AT&T was the first carrier in the world to launch iPhone in 2007 and is the only U.S. carrier to support iPhone 4S with 4G speeds.

“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’,” said Ralph de la Vega, President and CEO, AT&T Mobility & Consumer Markets.”

He may very well be right, as Sprint owners have been complaining about slow 3G data speeds ever since the launch of the iPhone 4S. Additionally, AT&T’s GSM/HSPA+ network allows for simultaneous voice and 3G data on the iPhone, while Verizon and Sprint CDMA networks are not capable of this.

Check out the video below from AT&T of why customers choose their network for the iPhone 4S:

As Horace Dediu points out, AT&T only activated 16% of all iPhones sold last quarter, which is a new low. AT&T was responsible for 37% of the US iPhone market this time last year.

Feel free to leave your thoughts in the comments!

  • fitu

    hey guys, can i buy an iphone in the usa and use it in europe? Does the applestore in the usa already sell the iphone 4s without a sim-lock?

  • Coney

    I’ve had my AT&T iphone 4 for over a year and AT&T is the worst carrier ive had. Anyone in NYC can vouch for this.Consistent dropped calls and 3G data is spotty during peak hours. I have to keep my phone on EDGE many times. Im ordering my Sprint iphone soon as its back in stock

    • Vladimir

      True story. AT&T service in NYC is not at its best for sure. I’m still getting dropped calls and crappy 3G service even with the iPhone 4S.

  • I have Verizon and I can talk and surf the web at the same time what do you mean by the AT&T is the only one that lets u do that?

    • Rob

      You might be on Wifi.

    • Kickstar13

      You can’t be on a call and use the Internet at the same time while on Verizon or Sprint’s 3G CDMA network.