Ring mode and ring duration
Decide whether a call rings out loud, vibrates or stays silent, and how long it rings before it ends as a missed call. App-wide defaults in Settings, overrides per call.
The three ring modes
| Mode | What happens | Good for |
|---|---|---|
| Sound | Rings with your ringtone at your current ringer volume, or with the contact's own ringtone. | Pranks and exits where everyone should hear it. |
| Vibrate | The ringer is switched to vibrate for this call only and restored afterwards. | Meetings: you "feel" the call and excuse yourself without the noise. |
| Silent | The ringer is muted for this call only and restored afterwards. The call screen still lights up. | When even a buzz would be too much. |
Never louder than your own settings. Vibrate and silent apply even when your ringer is on, but a phone already set to vibrate, silent or Do Not Disturb is never made louder by the app.
Set the default
Open the More tab → Settings. Under Ring mode choose how simulated calls ring by default, and under Simulation timing set the Default ring duration: how long the phone rings before the call auto-declines and shows up as missed (10 seconds out of the box).
Override for one call
On the scheduling screen, open Call options and pick a Ring mode and Ring duration for that call only. The Scheduled tab shows the chosen mode and duration under each call.
Silent mode and Do Not Disturb access
Android only lets an app mute the ringer if the app has Do Not Disturb access. The first time you pick the Silent mode, Self Call explains this and offers to open the system screen. Find Self Call in the list and allow it. You can also do it later from the App permissions screen in the app.
Until that access is granted, silent calls vibrate instead. Self Call only uses the access to mute the ringer for a single simulated call and restores your previous setting as soon as the call ends. It never turns Do Not Disturb on.
On some phones (Huawei and Honor among them) the system shows a short "ringer mode changed" toast at the bottom of the screen when the mode switches. That message comes from the phone, not from the app.
When your phone is already on Do Not Disturb
With Do Not Disturb active, a simulated call behaves like a real one: it arrives silently as a standard incoming-call notification instead of taking over the screen. Decide in advance whether you want that, or switch DND off before the call is due.