Answer or divert calls
When you receive a phone call, the Incoming Call screen opens, displaying the caller ID and any additional information about the caller that you've entered in People.
All incoming calls are recorded in the Phone app's Call log tab. If you miss a call, you receive a notification.
To silence the ringer before answering the call, press the Volume Down button on the side of your phone.
When a call arrives, touch the white phone icon and slide over one of these icons:
Answer call Start talking to the caller.
Send to
Direct the caller to leave a voicemail message.
voicemail
Send a
Opens a list of default text messages. Touch one to send it to the caller immediately.
message
Tip To edit text responses from within the Phone app, touch Menu icon 
> Settings > Quick responses.
Related topic
Set ringtone & other sounds
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