#3 Good vibrations
Just about every phone has the capability to vibrate to alert you of an incoming call, alarm, or some type of user-defined alert. The iPhone doesn’t limit you to just one flavor of vibration like many other phones. If you – for whatever reason – want to define some custom vibration patterns, you can create them by tapping out the new pattern that you want to create, and can then assign your custom vibrations to any type of alert you want.