Ever launch a game or start to watch a video and realize that you could stand to lower the volume, only to be thwarted when you start hitting the iPhone’s side volume buttons and see the “ringer” designation? We sure have. Fortunately, there’s an easy way to ensure this doesn’t happen again. Simply open up the Settings app, tap on Sounds, and look under Ringer and Alerts. You’ll see a volume slider, and then a toggle…