The forecast assumes that the interest for the iPhone is at the same level today as when it was launched. In case, if this forecast is real, Apple will sell a much larger number of phones than its own initial editions.
Recently, Apple reported it would increase its production of phones in Taiwan.
Currently, the company produces 150,000 units of iPhones per day. But considering that current demand exceeds supply, and that Apple is preparing to launch the iPhone in more countries, this could prove that even 150,000 daily appliances is an insufficient number.
