Your screen goes dark to avoid accidental touches. To wake it up, move it away from your face or press the Power button.

During a call, you can:

• Multitask. Touch to hide the call screen and use other apps. To return to the call screen, swipe the status bar down and touch Ongoing call.
• Answer another call. If call waiting is active and a new call comes in, you can answer it. The first call is put on hold. Touch to merge the two calls.
• Adjust the volume. Use the volume button on the side of the phone.
• Use speakerphone. Touch .
• Use a paired Bluetooth device. Touch to use or stop using the device.
• Mute your microphone. Touch .
• Enter numbers, such as a conference code. Touch .
• Add another person to the call. Touch .

To end a call, touch .