There's been a fair amount of speculation about sales of Verizon-network iPhones -- how many (half a million in a day?), how many are being sold to fed-up AT&T customers (Abandon ship! Abandon ship!) -- but AT&T says it's not worried. AT&T Mobility boss Ralph de la Vega says iPhone users aren't defecting to Verizon Wireless any faster than the carrier expected. "We haven't seen any surprises, and everything is pretty much within our expectations," de la Vega stated.
However, de la Vega didn't say exactly how
