Power/Lock Key
USB/Charger Port
Volume Keys
Power/Lock Key Press to lock/unlock the screen. Press and hold to turn the phone on/off, restart it, activate/deactivate airplane mode, or change the sound settings.
USB/Charger Port Allows you to connect the phone and the USB Cable for use with the charger adapter, or other compatible accessories.
Volume Keys Allow you to adjust the ringer, media volumes, or the volume during a call.