To turn off the device
1Press and hold down the power key 
until the options menu opens.
2In the options menu, tap Power off.
3Tap OK.
It may take a while for the device to shut down.
Screen lock
When your device is on and left idle for a set period of time, the screen darkens to save battery power, and locks automatically. The screen lock prevents unwanted actions on the touchscreen when you are not using it.
To activate the screen
•Briefly press the power key 
. To unlock the screen
•Place a finger on the screen and swipe up or down.
There are several ways to unlock the screen. For more information, see Setting a screen lock on page 116.
To lock the screen manually
•When the screen is active, briefly press the power key 
.
Setup guide
The first time you start your device, a setup guide opens to explain basic functions and help you enter essential settings. This is a good time to configure the device to your specific needs. You can also access the setup guide later from the settings menu.
To access the setup guide manually
1From the Home screen, tap 
.
2Tap Settings > Setup guide.
Accounts and services
Sign in to your online service accounts from your device to get easy access when you're on the move. For example, you can integrate contacts from your Google™ account into your phonebook, so you have everything in one place. You can sign up to new online services from your device as well as from a computer.
Google™ account
Having a Google™ account is key to using a range of applications and services with your Android™ device. You need a Google™ account, for example, to use the Gmail™ application in your device, to chat with friends using Hangouts™, and to synchronise the calendar application on your device with your Google Calendar™. You also need a Google™ account to download applications and games, music, movies and books from Google Play™.
Microsoft® Exchange ActiveSync® account
Synchronise your device with your corporate Microsoft® Exchange ActiveSync® account. This way, you keep your work email, contacts and calendar events with you at all times.
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