1. Press the Power/Lock key to lock the device screen, and to power the device on and off.
   
2. Press the Volume keys to adjust the device volume.
   
3. Press the Back key to return to the previous screen.
   
4. Press the Home key to return to the home screen, or press and hold the Home key to access Google Now.
   
5. Press the Menu key to access the menu for the current screen.
   
6. The microUSB port is located at the bottom of the device.
   
7. The Headphone jack is located at the top of the device.
   
8. The SIM-card slot is located on the back of the device.
   
9. The microSD slot is located on the back of the device.