Change the volume of a call, song, or videoUse the volume keys.You can adjust the volume during a call or when an application is active.The built-in loudspeaker allows you to speak and listen from a short distance withouthaving to hold the device to your ear.Activate or deactivate the loudspeaker during a callSelect or .Lock or unlock the keys and screenTo avoid accidentally making a call when your device is in your pocket or bag, lock thekeys and screen of your device.Lock the keys and screenPress the power key .Unlock the keys and screenPress the power key or the menu key, and select Unlock.Get started 9
