The Apple Watch wasn't always the king of smartwatches. Here's how it went from unpopular fashion accessory to conquer Fitbit and everyone else.

The Apple Watch is the most popular smartwatch in the world, but that wasn't always the case. It struggled to win over customers when after launching in 2015 and lagged behind Fitbit. But Apple in 2016 redirected its focus on fitness instead of fashion and sales started pouring in. See...