Checks within Apple's supply chain reveal the iPhone maker to have hiked its iPhone 3G build orders through the end of the year to more than 15 million, according to one Wall Street analyst.

In a report issued to clients Thursday, FBR Capital Markets analyst Craig Berger said the Cupertino-based company revised both third and fourth calendar quarter iPhone build numbers "significantly higher" to more than 15 million units, in addition to placing orders for 2 million more 2G iPhones.

>> Apple ups 2008 iPhone 3G build orders to 15 million - report