Digitimes is reporting that Apple is looking to ship up to 21 million iPhone 4s in Q1 2011. Its sources indicate that up to 15 million of these will be WCDMA (UMTS standard) devices with the remaining 6 million to be CDMA versions for North America (Verizon Wireless perhaps?) and the Asia Pacific region.
Digitimes estimates that Apple shipped about 15.5 million iPhones in Q4 2010, bringing its total 2010 shipments to about 47 million.