4.3Hangouts.....................................................
Google's instant messaging service, Hangouts, lets you communicate with your friends whenever they are connected to this service.
To access this feature and sign in, touch Application tab from the Home screen, then touch Hangouts. All friends added by using Hangouts from the web or phone will be displayed in your friends list.
Touch your account to set your online status.
Touch the text box below your online status to enter your status message.
To sign out, touch the Menu key from Friends list to display options, then select Sign out. Or you can also select Sign out from online status.
4.3.1Chatting with your friends
To start a chat, touch the name of a friend in your Friends list, then enter your message and finally touch 
.
You can invite other friends to join in a group chat by touching the Menu key and selecting Add to chat and then selecting the friend you want to add.
4.3.2To add a new friend
From Friends list, touch the icon 
to add a new friend. Enter the Hangouts ID or Gmail address of the friend you want to add, and then touch Done.
A notification with this invitation will be received by the friend. By touching the invitation, the friend can select Block, Decline or Accept in response.
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