Apple has been increasing its penetration into entry-level smartphone markets and the OEM production of iPhone 3GS has continued steadily with the volume likely to reach two million units in the fourth quarter of 2011 and 1.4-1.6 million units in the first quarter of 2012, according to industry sources.

Apple has been pushing the sale of its 8GB iPhone 3GS and iPhone 4 pre-loaded with iOS 5 globally, and besides, AT&T has also been promoting iPhone 3GS to contract subscribers with zero subscription rates, the sources revealed.

Meanwhile, the production of the CDMA version of iPhone 4 is expected to top 800,000 to one million units in the fourth quarter of 2011 and 500,000-600,000 units in the following quarter, estimated the sources.

Source:digitimes