How Much Data Does a VoIP Call Actually Use?
Reading time: 6 minutes
Published: February 20, 2026
VoIP (Voice over Internet Protocol) makes international calling cheap and easy — but how much data does it really use? In 2026, with better compression and networks, it's less than you might think.
This guide breaks down data usage for voice and video calls, factors that affect it, and tips to save data while using MyLine or similar apps.
How VoIP Data Usage Works
VoIP converts your voice into data packets sent over the internet. Usage depends on the "codec" (compression method) used. Most apps like MyLine automatically choose the best one for your connection.
Average for voice calls: 0.5–1.3 MB per minute (30–78 MB per hour). That's less than streaming music (about 1 MB/min) or video (hundreds of MB/hour).
Voice Calls: Data Per Minute
Common codecs and their usage:
| Codec | Data Per Minute (MB) | Per Hour (MB) | Quality |
|---|---|---|---|
| G.729 (Low Bandwidth) | 0.5 | 30 | Good |
| G.711 (Standard) | 1–1.3 | 60–78 | High |
| Opus (Modern Apps) | 0.5–1 | 30–60 | HD |
MyLine uses efficient codecs like Opus, so most calls use under 1 MB/min.
Video Calls: Much Higher Data
Video adds visuals, so data jumps up:
| Video Type | Data Per Minute (MB) | Per Hour (GB) |
|---|---|---|
| Standard Definition | 3–3.2 | 0.18–0.19 |
| High Quality | 6.7 | 0.4 |
| HD (1080p) | 20–21 | 1.2–1.25 |
Use voice-only when possible to save data.
Factors That Affect Data Usage
- Codec & Quality: Lower quality = less data (e.g., MyLine's "data saver" mode).
- Connection Type: Wi-Fi doesn't count against mobile data; 5G is efficient but fast.
- Call Length: A 10-min call uses 5–13 MB voice.
- App Overhead: Small extra for app features like encryption.
- Background Data: Close other apps to minimize total usage.
Tips to Minimize Data Usage
- Use Wi-Fi whenever possible — unlimited and better quality.
- Switch to voice-only (no video) for long chats.
- Enable data saver in MyLine settings — uses G.729 codec (~0.5 MB/min).
- Pre-download contacts/offline features in the app.
- Monitor usage in your phone's data settings or MyLine history.
- For low-data areas, use MyLine's offline mode (local access numbers) — no data at all!
A 1-hour daily VoIP voice call uses ~1–2 GB/month — less than streaming one Netflix episode!
VoIP: Efficient and Affordable
VoIP calls use surprisingly little data — about 0.5–1.3 MB/min for voice, more for video. With MyLine's optimized codecs and data saver, you can talk for hours without worrying about your plan.
Focus on Wi-Fi, and switch to offline mode when needed — stay connected, save data.
Talk more, worry less.
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