Huawei Y6 Pro - What You Can Do During a Call

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What you can do during a call
Touch to place the current call on hold, and then
touch again to resume the call.
Touch to display the calendar.
Touch to start a three-way call. Before you use three-way calling,
make sure you have subscribed to this service. For details, contact your
service provider.
Touch to use the speaker.
Touch to end the call.
Touch to display the dialer.
Touch to display your contacts.
Touch to write a note.
Touch to mute or unmute the microphone.
To return to the call screen, flick down from the status bar to open the notification
panel, and then touch
On-going call .