Edge Control is an app that lets you change the volume and brightness of your device by sliding your finger along the left and right edges of your screen. This makes it much easier to change volume and brightness much quicker, instead of having to press, for example, the volume-down button a bunch of times or pull down your Notification Center. This is also great if your volume buttons are broken, sticky, or just not where you like them! FAQ What is Edge Control? Edge Control is an app that lets you change the volume and brightness of your device by sliding your finger along the left...