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In this chapter, we're going to look at a couple of ways to protect your iOS device from being accidentally dialed or used, or from being accessed by people you haven't authorized. As well as some things you can do to increase the chances that you'll get your device back if you ever misplace it, or if it's stolen. The first feature I want to look at is Auto-Lock. The Auto-Lock feature refers to the iPhone, iPad, or iPod Touch's default behavior of turning off the screen after a minute or so of inactivity. This is to guard against you accidently tapping an icon or dialing a number from the iPhone while it's in your pocket. It also acts as a good battery conservation feature.
Go to Settings > General, and here you'll find Auto-Lock. Here, you can choose to allow anywhere between 1 to 5 minutes of inactivity before the phone or iPod Touch locks the screen. Making it so you have to press the Sleep/Wake button, and slide the unlock slider to use your device again. Now if you're on an iPad, you can choose a two, five, ten, or 15 minute interval. You can also choose Never. Meaning the screen will stay on indefinitely until you lock it yourself with the Sleep/Wake button, or until it runs out of battery power.
Just remember that you have to manually lock your screen if you choose Never. And if you forget, your battery will drain much more quickly. I think the default setting of one minute, or maybe even two minutes are good settings to use. If you haven't touched your device in a one or two minutes, you probably aren't actively using it, so let it go to sleep. Waking up the device is a simple matter anyway. So, you might as well choose the option that will do the most to conserve your battery power.
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