When receiving an incoming call, tap Dismiss to reject the call.
Tap Answer to answer the incoming call.
To use call waiting, swipe right over the Answer icon to answer an incoming call and place the current call on hold.
If you return to the home screen while on a call, the In call icon will be displayed in the notifications bar. Note: To learn about calling or using your device in other countries, visit the AT&T International Calling website.