When you receive a phone call, the Incoming call screen shows the caller ID. If you miss a call, you'll see 
To answer an incoming call:

During a call, you can use the keypad to enter numbers or codes, use speakerphone or a paired Bluetooth device, and add other people to the call. Learn more.
You can set your phone to automatically answer calls after 2, 5, or 10 seconds when you're using a headset (wired or Bluetooth).


Do one of the following:
If you don’t want to talk to the caller, you can:

You can:
If your phone isn't answering the call when you flip it open, make sure Flip open to answer is turned on.
If your phone isn't ringing for incoming calls, look for 

If you’re having other issues, try these troubleshooting steps.