To answer an incoming call, drag the Answer icon towards the right of the device.
To ignore an incoming call and forward to voicemail, drag the Ignore icon towards the left of the device.
To reject an incoming call with a message, swipe up Reject call with message.
Tap the desired message to send the caller a text message.
To use call waiting, while on a call, drag the Answer icon to the right to answer an incoming call.
Tap the desired option.
When connected to a call, the Call icon will display in the notification bar. Note: To learn about calling or using your device in other countries, visit the AT&T International Calling website.