How to Display the Battery Percentage on an iPhone You can determine how much battery life your iPhone has by checking its battery icon, which is located in the upper right corner of your iPhone's screen. But this icon is pretty small, and it can be hard to tell exactly how much Candy Crush playing time you have left. Luckily, there's an easy way to get a more accurate read on your phone's remaining juice: You can display the battery percentage in the upper right corner of the screen, right next to the battery icon. Here's how