Some of the biggest changes in iOS 10
are related to the lock screen. Swiping left and right now leads to the widgets screen and the camera. That means “slide to unlock” is dead, and you need to press the home button to actually get into your phone. If you want to undo some of these changes, here’s how to go about it.
Source: Gizmodo – How to Undo the Changes on the iOS 10 Lock Screen