This is a quick tip here. You've almost certainly seen the battery percentage next to the battery icon in the status bar on iPhone, iPod Touch and iPad. You want to know how to hide or show the battery percentage? Perhaps it looks cool up there, or maybe it's just wasted info on your screen. Either way, you will want to toggle it to suit your preference. By default, this should be toggled ON on your iPhone. Here is a step-by-step tutorial on how to toggle battery percentage.