We rate the many hits and many misses from the tech giant during Cook's five years at the helm.
Tim Cook had some very big shoes to fill.
Five years after taking over as Apple CEO from Steve Jobs, Cook has recreated the company's culture by making it much more focused on social issues. But Apple under Cook hasn't made as many big changes in its hardware, with Cook's only new category of product being the Apple Watch.
We debate Apple's biggest changes under Cook and look at what the company's next five years might offer, from iPhone improvements to self-driving cars.
The 3:59 gives you bite-size news and analysis about the top stories of the day, brought to you by CNET Executive Editor Roger Cheng, Senior Writer Ben Fox Rubin and Producer Bryan VanGelder.
Check out the extended shows on YouTube.
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