Audio/Headphone Jack: Used to plug in your headset or headphones.
Camera: Used for taking pictures.
Flash: Used for taking pictures in low-light situations.
Nano SIM / microSD Card Slot: Insert or remove your nano SIM / microSD card here.
Power/Lock Button: Press to lock or unlock the touchscreen. Hold down to turn the device on or off.
Speaker: Used to play sounds on your device.
USB/Charging Port: Connects your phone to the battery charger or to another device for transferring data.
Volume Buttons: Adjusts the volume on your device.