The extraordinary demand is likely due in part to the long wait consumers have had to endure between iPhone iterations. The iPhone 4 launched in June 2010 and in recent months anticipation for the latest version has been almost palpable.

The iPhone 4S is priced at $199 for the 16GB model, $299 for the 32GB version, and $399 for the new 64GB version, all with a two-year contract.

An of the device that works only on supported GSM networks will be available beginning in November. The prices for the unlocked iPhone 4S are $649 for the 16GB model, $749 for 32GB, and $849 for 64GB. Apple is selling the unlocked iPhone 4S already in some countries, such as the U.K, Germany, France, and Canada.