Apple could potentially more than triple 2009 iPhone ownership by the end of 2011, reaching 100 million subscribers, claims Morgan Stanley analyst Katy Huberty. Roughly 30 million subscribers were recorded by the end of last year, and Huberty estimates that Apple will sell at least 42 million more phones by the end of 2010. This assumes a 30 percent upgrade rate; if upgrades reach 50 percent, sales could hit 48 million.
