Downloading data with the AT&T iPhone, which runs on a 3G HSPDA network, is twice as fast as downloads with the Verizon iPhone, which runs on EVDO, according to mobile research firm Metrico Wireless. But the average load time for an "average Web page" is the same on both devices.
When the iPhone user is on the move, AT&T's iPhone completed "around 10 percent more data download sessions than the Verizon iPhone. The opposite was true when the iPhone was stationary," Metrico found.
"There are many factors that determine Web performance. Speed isn't the only one," a Metrico spokeswoman said. "There's also OS trends, rendering time, latency on the network, etc. This report's findings are based on a standardized average Web page. Larger Web pages may offer different results."