To conference call on Android, follow these steps:

1. Make a call to the first person you want to add to the conference call.
2. Once the call is connected, tap the “Add call” button.
3. Dial the number of the second person you want to add to the conference call, or select them from your contacts list.
4. Tap the “Merge” button to connect the two calls.
5. Repeat steps 3 and 4 to add more people to the conference call.

To remove someone from the conference call, tap the “Call options” button (three dots) next to their name, then tap “Remove from call.”

To end the conference call, tap the “End call” button.

Here are some additional tips for conference calling on Android:

• You can add up to five people to a conference call on Android.
• You can mute yourself during a conference call by tapping the “Mute” button.
• You can adjust the volume of each participant in the conference call by tapping the “Volume” button next to their name.
• You can switch between different speakers in the conference call by tapping the “Speaker” button next to their name.