iPhone fever has some analysts predicting greater sales than Apple’s original estimate, even while other analysts are predicting supply constraints in reports today.

Last week, AT&T CEO Randall Stephenson said that "expectations are too low for iPhone sales. In a news item on Monday from Bloomberg News, he pointed out that AT&T has received inquiries from more than a million customers. "I think they’ll ship 10 million [phones] this calendar year," said Stephen Coleman in support, chief investment officer at St. Louis-based Daedelus Capital, which has owned Apple’s shares since February 2004.

Initially, Apple predicted that they would sell 10 million iPhones in 2008.

Offsetting this, however, is the concern by some analysts that Apple and AT&T may not be able to meet early demand.

JPMorgan Securities Inc. analyst Bill Shope said in a report today that availability may be limited, and even though early waits for the phone could build a buzz, customers may also have to deal with a long wait. He also said that Apple will "need to go beyond just buzz" to justify the iPhone’s price and two-year contract. As a result, JP Morgan is keeping its "neutral" rating on the Apple shares.

On the whole, however there is optimisim by most analysts. In data compiled by Bloomberg, 23 of them rate Apple "buy" while only four rate "hold." None are advising "sell."