Bottom line: Should you upgrade to iOS 10?

Let’s cut right to the chase: iOS 10 looks great, works really well, and does more to freshen up the iOS experience than any update before it. It brings some pretty significant changes like the all-new lock screen behaviors, but iOS 10 still feels familiar enough that the new gestures become old hat after just a few days.
The apps that got the biggest overhauls are, frankly, the apps that needed them: Music and Maps. The former is less of a mess in general, and the latter is easier to use