Apple is #3 manufacturer by revenue according to Steve Jobs34
The iPhone 3G together with the Apple TV accounted for $11.7 billion in income and $2.4 billion in profit, although these figures will not be booked immediately but only on a subscription basis. Given the Apple TVs niche status, it is safe to assume that most of the income and profit is attributable to the iPhone.
Nokia and Samsung are the first and second placed mobile phone manufacturers by revenue. RIM sold 6.1 million BlackBerries in the quarter ending on 30th August 2008.
source: ArsTechnica, more and CBC.ca