The battery icon in the top right corner of your iPhone lets you know how much juice your phone's got left, but it doesn't offer much detail. From a quick glance at the little icon, it's hard to say whether you've got 60% of your battery left or 40%. And the difference can mean hours of battery use—or having your iPhone run out of power when you need it most.
But, with one small setting built in the iOS, you can get more information about how much energy your phone has left. Here’s a trick for getting easier-to-understand and more accurate information about your battery.
If you're running iOS 4 or higher, the iPhone, iPod touch, or iPad can show their remaining battery life as a percentage next to the icon. To turn this setting on:
- Tap Settings
- Tap General (in iOS 6 and higher; if you're on an older OS, skip this step)
- Tap Usage
- Slide Battery Percentage to green (in iOS 7) or On (in iOS 4-6).
Changing this setting enables a numerical display of your iPhone's battery life in the top right corner of the screen so you'll know when it's time to recharge and whether you can squeeze out a few more hours of use.