Huawei Mate 8 - Manual (Page 91)

Call & Contacts
84
Answering or rejecting a call
When a call comes in, you can press the volume button to mute the ringtone.
While the screen is locked:
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Drag right to answer the call.
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Drag left to reject the call.
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Touch to reject the call and send the caller a custom or predefined text message.
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Touch to configure a callback reminder.
While the screen is unlocked:
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Touch to answer the call.
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Touch to reject the call.
•
Touch to reject the call and send the caller a custom or predefined text message.
•
Touch to configure a callback reminder.
On the dialer screen, touch > Settings > Reject calls with SMS to edit the
predefined text messages.