Samsung GALAXY S6 EDGE User Manual page 297

Quick Reply Settings
Quick reply allows you to reject an incoming phone call with a text message by placing your finger on the
heart rate sensor for two seconds. The call is rejected, and a preset message is sent to the caller.
To turn on and configure Quick reply:
1. From home, tap Apps
2. Tap Edge screen > Edge lighting > Quick reply.
3. Tap On/Off to enable Quick reply.
4. Tap the message to edit the text reply.
5. Tap Back to save changes.
Settings
> Settings .
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