While in a call, the In-Call icon will be displayed in the Notifications Bar.
While receiving an incoming call, touch, then drag the Answer icon to answer the call.
Touch, then drag the Reject icon to reject a call.
To reject the call with a message, swipe up from the bottom of the screen.
Select the desired message, or select Create new message to reject the incoming call with a text message. Note: To learn about calling or using your device in other countries, visit the AT&T International Calling website.