Apple just announced at their earnings conference that “retail revenue was $2.58b; $5.33 billion in iPhone revenue, which is a 74 percent increase, with $2.17 billion in iPad revenue — $2.1b of that was iPad, the rest was accessories.” They also reiterated that the return rate for iPhone 4s is far less than that of its predecessor, the iPhone 3G S, despite the many glaring issues. Here’s what they have to say about the free bumpers being give to iPhone 4 owners:

Our estimate is $175 million. We will expense the cost of the bumpers when we ship them to customers — our most important objective is to take care of every customer and delight them.

[via Engadget]