1. To start a conference call, while on a call, tap Add call.
   
2. Enter the desired phone number or contact, then tap the Call icon.
   
3. Once the second call has connected, tap Merge.
   
4. To manage callers, press the Menu key.
   
5. Tap Manage conference call.
   
6. Tap the Split call icon to begin a private conversation and place the other caller on hold.
   
7. To disconnect from a single call, tap End next to the desired caller.
   
8. To disconnect from all calls, tap End call.