You can press the volume control on the left side of the phone to adjust voice volume during a call, media playback volume, or ringer volume (when you’re neither playing media nor participating in a call). The volume control is context sensitive instead of being a general volume control; what is affected when you press the control depends on what you’re doing.
1. To change the volume, press the volume control. A context-sensitive control appears.
2. To raise or lower the volume, drag the slider. You can also press the top part of the hardware volume control to raise the volume or press the bottom part to lower the volume.
3. Optional: To adjust other common volume settings, tap the Settings icon and drag the sliders that ...