Your iOS device has multiple volume settings, and each one controls something different.
For example, you have your media volume, which affects your song and video sound output, and you have your ringer volume, which affects your ringtones, text tones, and notification sounds. But there are also other volume settings that you can set where applicable.
Volume Mixer 2 is a jailbreak tweak that provides you with an interface where you can conveniently adjust all of those volume levels at one time, and in this review, we'll talk about how it works.