Taking Care of the iPhone Battery
Your iPhone comes with a large lithium-ion battery. Apple claims that the iPhone 5 gives you up to 200 hours of standby time, 8 hours of talk time on a 3G network (14 hours on an EDGE network), 8 hours of Internet use on an LTE or 3G connection (10 hours using Wi-Fi), 40 hours of audio playback, 10 hours of video playback, and 225 hours of standby. Those are all impressive times, although you should count on getting less in the real world.
The biggest downside to the iPhone battery is that it’s not, in Apple parlance, user-installable. If your battery dies, you have no choice but to return it to Apple to get it replaced. This is all the more reason to take care of your battery and try to maximize its life.
Tracking battery use
Your iPhone doesn’t give a ton of battery data, but you can monitor both the total usage time (this includes all activities: calling, surfing, playing media, and so on) and standby time (time when your iPhone was in sleep mode). Here’s how:
1. On the Home screen, tap Settings. The Settings app appears.
2. Tap General. Your iPhone displays the General options screen.
3. Tap Usage. Your iPhone displays the Usage screen.
4. Tap the Battery Percentage switch to On. Your iPhone shows you the percentage of battery life left in the status bar beside the Battery icon, as shown in Figure 14.4.
14.4 In the iPhone Usage screen, ...