Hardware Reference
In-Depth Information
The power pop-up
The physical volume control buttons work even when the screen is sleeping, so you can
adjust the playback volume of music without waking up the screen.
As mentioned above, the micro-USB port is used for charging the device. It can also be
used to connect the device to a computer to transfer files, such as music and photos.
Some Android tablets and phones also have a slot for an SD or Micro-SD card, which al-
lows you to expand the memory so that you store more photos, videos, and music on the
device. Phones and LTE tablets also have a slot for a SIM card, which programs the device
for use with a specific cellular carrier.
Home Screen
As the name implies, the Home screen is your starting point in Android. You can actually
have more than one Home screen- to see them, swipe left or right. But you can always re-
turn to the main Home screen by tapping the Home icon at the bottom center of the screen.
Touch Screen Navigation
Except for the three physical buttons, you use Android phones and tablets by tapping, swip-
ing, and gesturing on the touch screen. To activate something, touch it. To enter text, touch
where you want to type, which activates the on-screen keyboard. For example, when you
touch a search icon, the search text field appears and the keyboard pops up. When you're
finished typing, tap the Search icon on the keyboard, or Go, and the keyboard disappears.
You can also dismiss the keyboard by tapping the Back icon.
You can select an item by touching and holding it. Options will pop up. On the keyboard,
touching and holding selects alternate characters. Touch, hold, and drag is used to move
things around. An example is copying an app from the Apps Drawer (see below) to the
Home screen. When you lift your finger, the app icon appears there.
Touch the screen and then slide your finger up, down or sideways without pausing to move
between home screens or to pan a map. Touch with two fingers at once, and then spread
your fingers to zoom out and pinch your fingers to zoom in. Rotate your two fingers to ro-
tate the screen. Google Maps is an excellent app to practice these skills. Not all gestures
work in all apps.
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