From December 26, 2010 til March 26, 2011 Apple racked in a total of 24.6 billion dollars, how much of this revenue would be from the iPhone? Most people would guess between 10 and 30-percent, but no, 50-percent. Half of Apple's quarterly revenue is from iPhone and iPhone-related products.
Apple sold 18.65 million iPhones last quarter, using this amount of phones, we can work out that this is roughly 12.3 billion in revenue - roughly 50-percent for the iPhone division of Apple alone. But, this is not just on iPhone hardware, it is also "Related Products and Services". What does the related products and services include? Apple's report shows: "carrier agreements, services, and Apple-branded and third-party iPhone accessories."
But, this does not include any revenue from Apple's App Store (that is considered iTunes revenue), nor does it include iPod touches or iPads.