Use the audio controls
Switch between speaker and earpiece, turn the voice off, and mute your microphone.
The chips on the right side of the orb control sound: Speaker On, Voice, and Mute.
Speaker or earpiece
Tap Speaker On to change to Earpiece On. Tap it again to change back. Use the earpiece when you practice in a public place.
Voice or silence
Tap Voice to change to Silence. In Silence, Uyen does not speak its replies. You read and reply in the chat.
In Silence, a practice ends after 60 seconds with no reply. Before that, the banner shows Reply to continue. With voice on, a practice ends after 30 seconds with no talk.
Mute
Tap Mute to stop sending your microphone. Tap Unmute to start again.