Recently it was revealed that Apple had managed to sell a whopping 10 million new iPhone 6 units during its launch weekend alone. It should be noted that the phones sold were also limited to several countries as Apple had not rolled out the new iPhone 6 and 6 Plus to the rest of the world yet. That is mighty impressive. Now if and when Apple does roll it out to the rest of the world, how many units could Apple end up selling? Well according to a report by Keith Bachman, an analyst at BMO Capital, he believes that Apple could end up selling as many as 189 million iPhone units in 2015.