http://www.gearlog.com/2008/07/is_ap...n_iphone_c.php

That number, however, may have, in fact, been exaggerated--a lot. According
to Piper Jaffray's Gene Munster, the number of phones sold over that time
period is probably closer to 425,000. According to the analyst's numbers,
it will likely take Apple around 17 days to actually hit the one million mark.

The discrepancy apparently has to do with the way Apple records its sales,
logging one for both every unit sold in their stores and each one shipped to
wireless carriers, like AT&T, meaning that one million units may be out of
Apple's hands now, but that doesn't necessarily mean that all of them are
in the hands of consumers.