If the screen is unlocked, simply tap the Answer icon .
If the screen is locked, swipe the Answer icon in any direction to answer the call.
If you were already on a call, tap the Answer icon which places the first call on hold and connects the new call.
To silence the incoming call ringer, press either of the Volume Keys (on the back of the phone).
Tap the Answer icon to answer the call.
Swipe the Answer icon in any direction to answer the call.