There was a plethora of phone releases in 2015, but not a lot of game-changers hit the market. That looks set to change in 2016, with major players like Apple, Samsung, Microsoft and many others gearing up for major phone launches in the coming year.

For nearly two months now, Apple’s iOS 9 has been available for upgrade. But if you have yet to make the switch, you may still be curious about its new features and whether or not they make it worth installing. If this is you, here’s what you need to know about iOS 9 and four of its most popular new features.