The iPhone and iPod Touch both have large internal batteries that cannot be removed. This means that unlike with other mobile phones, you can't have a spare battery charging on the side to swap in when the one in your phone or iPod becomes depleted. So, managing battery life is an especially important part of owning iPhone or iPod Touch. In the chapter on troubleshooting, I'll cover several techniques on extending the charge of your battery, but here I just want to make sure you understand the options for charging your iPhone or iPod Touch. The iPhone comes with a USB cable for connecting to your computer, as well as a power adapter for charging your phone from a regular wall outlet.
If you have an older iPhone, you might have a slightly larger power adapter. The iPod Touch does not come with this power adapter, so initially you can only charge it by plugging it into your computer. But you can purchase one of these adapters from Apple, or something similar from a third-party vendor. So, to charge your iPhone or iPod Touch, plug the dock connector end into the dock connector port of the device. Then plug the USB end into either your computer or into the power adapter. Then plug the power adapter into a wall outlet.
Once plugged in, you'll see a large charge level indicator appear when you wake up your iPhone or iPod Touch. When you unlock the phone, the battery indicator in the upper right-hand corner shows a little lightning bulb symbol, indicating that the phone is charging. Once the phone reaches a full charge, the bulb changes to a plug icon, indicating that the charge is complete, but that it still knows it's plugged into a power source. Your device will warn you if your battery level is getting so low that your device will no longer function. First, you'll see a message saying that your battery life is at about 20%, and you get a similar message when it reaches about 10%.
That's where you queue to plug in your device as soon as possible. Finally, when there's just no power left, the device will shut off and be unusable until you plug it in. In cases of extreme depletion, you won't be even to use the device while it's plugged into a power source until its charge comes up to a usable level. You can get a more accurate read on your battery level by going into Settings > General > Usage, and here you can turn on Battery Percentage. This gives you a percentage display next to your battery icon. So again, with no removable battery, it's important to have the basic tools to keep your iPhone or iPod Touch charged.
Many people keep an extra power adapter and cable by their nightstand and let their phone charge overnight. For me, charging overnight is all I generally need, unless I'm traveling and using my iPhone to watch videos on a plane, or using its GPS capabilities to get me where I need to be. In addition to having an extra charger for your nightstand, you should also pick up one of many available chargers for your car, and you may even want to look into an accessory like an external battery pack. Many manufacturers make battery that plug directly into the iPhone or iPod Touch's dock connector, which is the same connector the regular USB cable connects to.
And you can even find cases for your device with batteries built-in. These are especially nice, because you don't have something hanging out of the phone that you might accidentally snap off, and some of these models can almost double your usage time. As you spend more time with your iPhone or iPod Touch, you'll get a better idea of how often you really need to charge it. It does depend on how frequently use it, as well as whether or not you have other settings turned on or off. Again, see the movie on extending your battery's life in the Troubleshooting chapter at the end of this course for more information.
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