That would imply that iPhone 4 sales were dropping up to the release of the new model, when in fact the opposite is true. Remember that the new product was expected for WWDC and sales up until that point had also been on the rise with a record quarter.

It always amazes me that people come up with these elaborate theories and explanations. Can't it be as simple as the iPhone is a well-liked product by a large number of people? Yeah, I suppose that's preposterous. The iPhone can't possibly do as well as it has been simply because it's a great product.

I don't think Jobs's death had any bearing whatsoever on iPhone 4S sales.