Camera: Used for taking pictures.
Flash: Used for taking pictures in low-light situations.
Glass back: Used for wireless charging.
Microphone: Built-in microphone used for phone calls and voice commands.
Nano SIM / nano SD card slot: Insert or remove your nano SIM / nano SD 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.