Use session buttons to carry out duties, such as answering a call or resuming a held call. Shades show your telephone's position: Toggle the Headset, Mute, and Speakerphone buttons on and off to indicate the mobile phone condition. Make use of the Headset button to toggle the headset on. In https://www.noteflight.com/profile/92c2b30d1ff459a59c80a49169ca14f160e760ed