Battery

If your device's battery can no longer hold a charge, you need to have it replaced. Use one of these options:

Within warrantee period

If you are still within Apple's one-year limited warranty, or have purchased and are within the extended AppleCare Protection Plan, Apple will replace your defective battery. (They define "defective" as a battery that drops below 50 percent of its original capacity.)

Warrantee expired

If your device is no longer under warrantee, you can use Apple's Battery Replacement Service and pay a flat fee to have your battery replaced.

Before you send your device in for service, here are some things you can do:

• Use the AC power adapter that came with your iOS device to charge it. (A battery icon will appear on the screen indicating that your device is charging.)

The battery icon appears on your Locked screen, indicating that you are connected to a power adapter and charging.


• You can also charge your device from your desktop computer using the USB sync cable. However, make sure you connect to a USB port on the computer.

iPhone, iPad only

If you like keeping track of how much battery life your iPhone or iPad has left, you may want to choose to have the remaining percentage displayed in the status bar at the top of the screen.

iPhone, iPod touch and iPad


Although the iPhone, iPod touch and iPad come with a decent battery life, it's possible to run out of power during a normal day's use, especially on the iPhone. Here are some general ways you can conserve battery power:


1. Dim your screen: The brighter the screen, the more power you're consuming. Open Settings>Brightness to adjust it to the lowest level you are comfortable with.

2. Turn-off Wi-Fi when you're not using it: Whenever you are not using Wi-Fi, turn it off to conserve power. Open Settings> Wi-Fi and slide the button to the right of Wi-Fi to the OFF position.

High dynamic range (HDR) photos on iPhone 4

One of the big pluses of the iPhone 4 is its high dynamic range (HDR) camera, which can capture amazing images. However, the file size of these images tends to be quite large and e-mailing them as attachments can take a bite out of your data plan. Our advice: turn it on if you want high resolution; turn it off if you're going to e-mail a photo to a friend.