The iPhone has generated an estimated $150bn for Apple in 5 years

"According to the latest research from Strategy Analytics, Apple has generated US$150 billion of cumulative revenues for its iPhone family in the first five years since launch in June 2007. A quarter of a billion iPhones have been shipped cumulatively worldwide.
Neil Shah, Senior Analyst at Strategy Analytics, said, "Apple's first iPhone was launched commercially in the United States on June 29, 2007. Between June 2007 and June 2012, we estimate the iPhone family of models has generated US$150 billion of cumulative revenues worldwide for Apple. This is an impressive achievement and it illustrates just how popular the iPhone has become during the past five years.""

Source:  Press release from Strategy Analytics, 27th June 2012