Apple's iPhone Duo pre-orders started at $1,999 and sold out instantly, with shipping scheduled to begin on November 23. The device is now temporarily unavailable until January, with availability shifting to December after pre-orders began. The iPhone Duo is currently available for pre-order at $1,999, according to a well-known tech site. According to a popular tech news site that the device was quickly snapped up and is unavailable until December.