Create customized vibration alerts
If the standard "bzzz bzzz" staccato doesn't cut it for you, you can create your very own vibration alert for everything from phone calls to tweets by tapping the screen like a DJ's drum pad. To give it a whirl, tap into the Sounds menu, select the alert you'd like to change, click Vibration, and scroll down to Create New Vibration. And much like you can set distinct ringtones for specific contacts, you can create custom vibrations for them too.
Provide life-saving intel for first responders
Like a digital medical ID bracelet, the latest iPhone iOS versions include the ability to input a variety of important medical info (blood type, medical conditions, allergies, emergency contact, organ donor status, etc.) via the Health app. Any first responder can see all of it by clicking the lock screen's "Emergency" section and tapping the Medical ID button.