Apple's shares dropped on the heels of its earnings release, for reasons unrelated to the CEO change. The iPhone is not deadThe defining product of the Tim Cook era, by far, was the iPhone. A growing installed baseDuring its third quarter, Apple's installed base reached an all-time high across all categories and geographic segments. Apple can bounce backIn its third quarter, Apple posted revenue of $109.4 billion, up 16% year over year. Investors should look beyond near-term issues and load up on Apple's shares on the dip.