Change the brightness of the flashlight
The iPhone's flashlight feature has saved my ass from tripping in the dark many a time, but it's almost too bright sometimes. Well, iOS 10 gives you the option to dim it. When you hard-press the flashlight icon on a 3D Touch-enabled device (iPhone 6s or newer), it gives you the choice to pick from a low, medium, or bright light. Additionally, the alarm and camera icons on the Control Center screen can be long-pressed to quickly access certain features, including setting a timer and taking a photo/selfie/video, respectively.