Chowdhry could not immediately be reached for comment. Apple and AT&T were not immediately available.
Piper Jaffray also estimated first-weekend sales of the iPhone at about 500,000, according to cnet.com.
The iPhone, which combines a phone, Web browser and a music player, went on sale on Friday. About 2 percent of buyers have experienced delays in activating their service, a source said on Sunday.
525,000 iPhones sold since Friday
Posted on Tuesday, Jul 03 2007 @ 00:01 CEST by Thomas De Maesschalck