Chapter 1. Turning Your iPhone On and Off
Turning an iPhone on and off should be easy—and it is. However, the iPhone can be in one of four states: on, off, sleep, or airplane mode. If all of this sounds more confusing than just turning your iPhone on and off, relax. There are actually valid reasons for putting your iPhone into different states. The trick is learning the advantages of each state and how best to put your iPhone into each state.
When your iPhone is on, you can use it to make calls, browse the Internet, listen to music, or perform a multitude of other tasks.
After you've turned on your iPhone, you can switch it to sleep, off, or airplane mode. When your iPhone is in sleep mode, you'll conserve its battery power while keeping it ready ...
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