1. While on a call, tap Accept Call call to answer.
   
2. To make a conference call, while on a call, tap Contacts or Dialpad.
   
3. Tap the Call icon next to the desired contact.
   
4. To switch between calls, tap Swap.
   
5. With both calls on the line, tap the Menu icon.
   
6. Tap Merge calls.
   
7. Tap Conference call.
   
8. Tap Private to make a call private, and put the other call on hold.
   
9. Tap Exclude to end a call.
   
10. Tap End Call to disconnect both calls.