Minimal Internet Speed for iCallU
iCallU uses WebRTC peer-to-peer calling with adaptive bitrate. It keeps calls stable on weaker networks by adjusting video quality automatically.
Absolute minimum connection
| Mode | Download | Upload |
|---|---|---|
| Audio call | 50-80 kbps | 50-80 kbps |
| Low-quality video | 250-300 kbps | 250-300 kbps |
| Standard video | 600-800 kbps | 600-800 kbps |
Below these values, calls may connect but quality can become unstable.
Recommended speeds (best experience)
| Mode | Download | Upload |
|---|---|---|
| Clear audio | 100 kbps | 100 kbps |
| HD video (720p) | 1-1.5 Mbps | 1-1.5 Mbps |
| Smooth HD | 2 Mbps | 2 Mbps |
Why iCallU works well on weak networks
- Adaptive bitrate and resolution (video adjusts automatically)
- Audio continuity prioritized when bandwidth drops
- No ads, trackers, or analytics competing for bandwidth
- Peer-to-peer WebRTC (lower overhead than server-heavy apps)
FAQ
Will iCallU work on slow LTE / 3G?
Yes - audio can work under ~100 kbps, and video can run around ~300 kbps at reduced quality.
What if my network drops during a call?
WebRTC will try to keep the call alive by lowering video quality and preserving audio first.
Do I need fast upload and download?
Yes. Calls are real-time both ways, so upload matters as much as download.