Huawei Y3II - 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 mute or unmute the microphone.
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 display the dialer.
Touch to end the call.
Touch to display your contacts.
Touch to write a note.
To return to the call screen, flick down from the status bar to open the notification
panel, and then touch
Ongoing call .