Forgive me if this question has an easy answer, but I genuinely don't know it. I sometimes give my kids my iPhone or iPad to play with they they immediately crank the volume on videos, YouTube, etc. I lower it and they immediately raise it. Rinse, lather, repeat. Is there a setting in iOS 7 which allows a parent to freeze the volume of video, music, apps, etc. at whatever its current setting is and disabling the hardware and screen volume control adjustments? Thanks.