Encrypted calls
Who this is for: users placing private voice or video calls on the 1-to-1 sealed surface.
What it is
Encrypted call setup with media that prefers device-to-device (WebRTC). Buzzio does not keep a server recording you can play back later. Call history on the Call tab is local (~24 hours visibility).
How to use
- Open a 1-to-1 chat.
- Tap voice or video.
- Or open the Call tab for recent local history and return to people you have called.
In-call controls: mute, speaker, camera on/off, flip camera, screen share, end.
During a video call, screen share pauses both cameras so both people see only the shared screen. During a voice call, share adds the screen on top of audio; cameras stay off. One person can share at a time.
- Android: Press Home to show another app while sharing — capture continues from the call notification.
- iOS: The system Start Broadcast picker appears; choose Buzzio. Capture continues in other apps until you stop from Control Center or the in-call share button.
Privacy strip
| Property | Status |
|---|---|
| Call content archive on Buzzio servers | No — we do not record calls |
| Signaling | Sealed invite path; not a permanent call dossier |
| Media path | P2P when networks allow; Cloudflare TURN relay only to connect |
| Relay can hear/see the call | No — TURN forwards encrypted packets, not plaintext audio/video |
| Call history list | Local on device (~24 hours on Call tab) |
| Durable “who called whom” when idle | No lasting browsable server file |
1:1 product vs conference plumbing
| Surface | Status |
|---|---|
| 1:1 voice/video | Documented product surface — use from a 1:1 chat |
| Sealed call invites | Shipped for 1:1 and conference invite envelopes (deliverSealedCallInvite); wakes omit caller_id |
| Multi-party conference UX | Invite plumbing may exist; treat full multi-party calling as not the primary documented product until the in-app experience is clearly shipped |
Do not cite “conference calls” as a flagship feature from docs alone.
Limits
- Requires a private 1:1 relationship path.
- Blocks generally prevent calling that relationship — Safety.
- Network quality dominates; Cloudflare TURN is for connectivity when a direct path is blocked, not Buzzio recording.
Troubleshooting
Permissions (mic/camera), Wi-Fi ↔ cellular, blocks, and OS background limits — Troubleshooting.