Tim Cook's iPhone anniversary tweet has a hidden detail only Apple nerds will notice

Tim Cook just acknowledged the iPhone's tenth anniversary in the most Apple way possible.

"Here's to the #iPhone that changed the world, to the man who dreamed it & the people at Apple who have never stopped looking to its future," the CEO wrote. 

That may sound like a pretty straightforward sentiment given the occasion, but there's more to the tweet than meets the eye. The tweet was sent at exactly 9:41 a.m., which careful observers will notice matches up with the time on the image of the original iPhone in Cook's tweet. That's not a coincidence. Read more...