Here's a quick anatomy lesson.
Close menus and return to the main screen.
Headset Jack (3.5 mm)
2
Touch Screen
Home Key
Volume Keys
Micro USB Port
Microphone
Earpiece
Touch Cover
Close your phone and touch the cover to open
music and other features.
Power Key
Turn your phone on and off, and end calls.
Touch Cover Lock
Slide the switch up to lock the touch cover
when your phone is closed.
Voice Key
microSD Memory Card Slot
Camera Key
Speaker (on back)