When you make a call, there will be a speaker icon in the call menu. Tap the speaker icon to switch to speakerphone mode.     When the speakerphone is ON, the speaker icon will glow like this:      When the speakerphone is OFF, the speaker icon will be grey like this:   Tip: Your phone volume settings control the speakerphone volume. Use your device’s volume controls to adjust the volume if it is too loud or too soft.