Ending or rejecting an incoming call

1. When someone calls you, you see their name if they are in your contact list and a message saying Incoming call.
2. Select the reject button to reject the call.
3. Say "No" or alternatively select the Incoming call message to see the following options:
SMS (Android only)
Reject
Answer

You can then select Reject.

Note: : Deleting the Incoming call message by swiping left or right rejects the call and doesn't record it as a missed call.