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this app.
From the home screen, tap > Play Music to access Google Music.
The app searches your online library and your phone for music and playlists
before displaying your combined music library, organized by GENRES,
ARTISTS, ALBUMS, and SONGS. You can tap > My Library to view your
library or tap > Playlists to view existing playlists.
Google+
Connect with friends and family via Google’s social networking site. Set up
circles to organize people into groups for sharing content. Create hangouts
for group video chats, upload photos and videos, and much more.
Maps
Find local businesses, view maps, and get driving directions.
Hangouts
With Google Hangouts, you can bring groups of friends together into a
simple group conversation with text, photos, and video chat.