Google Maps uses varying amounts of data depending on the function:
- Map view: 5–10 MB per hour
- Navigation: 20–40 MB per hour
- Satellite view: 50–100 MB per hour
- Street View: 100 MB per hour
To reduce data usage, download offline maps, preload routes over Wi-Fi, or activate airplane mode (GPS stays on, but no new data is used). Check your data usage regularly in your phone’s settings to avoid surprises.