iPhone 4S Speed Test Chart

iPhone 4S Download Speeds Compared

iPhone 4S data speeds are the fastest on AT&T compared to Sprint and Verizon. A study performed by Metrico Wireless did 21,000 Web page downloads nationwide with the iPhone 4S and iPhone 4 over the networks of the nation's largest three carriers. Metrico also ran more than 8,000 data download and upload tests and generated about 6,000 voice calls with recorded human voices. The tests were performed in a certified lab as well as several locations in five unnamed cities.

AT&T was twice as fast as Verizon in Web browsing with the iPhone 4S, recording average page load times of 1.29 seconds, compared with Verizon's 2.60 seconds. Sprint's version of the phone took an average of 6.44 seconds for Web browsing page loads. In terms of specific data download speeds, AT&T had an average speed of 3.2 Mbps, compared to 1.0 Mbps for Verizon and .5 Mbps for Sprint, one-fifth the speed of AT&T. The peak data download speed on AT&T was 6 Mbps over its 3G GSM HSPA+ network.