Mobile Lab

Mobile Lab gives you professional-grade RF diagnostics on your Android phone — no external hardware required.

Signal dashboard
See your live serving cell KPIs at a glance: RSRP (signal strength), RSRQ (signal quality), SINR (noise ratio) and a composite 0–100 health score. A colour-coded gauge and network badge tell you instantly whether you're on 5G NR, LTE, or 3G and how good the connection really is.

Call quality log
Every completed call is graded A to D based on the signal readings captured during the call. Dropped calls are automatically flagged. Review your call history to understand which locations or times of day cause poor calls.

Overview & smart fixes
One-tap fixes for common signal problems. See your weekly signal history and saved locations compared against your current signal.

Speed test
Multi-threaded HTTP speed test measuring download, upload and latency. Results are saved with the signal conditions at the time of the test.

Indoor mapper
Walk around your home, office or warehouse and tap to record signal readings at each spot. The app interpolates a colour heat-map over your floor plan so you can see exactly where dead zones are.

Drive test
Attach your phone to your car and drive. Mobile Lab logs signal strength against GPS coordinates and draws a colour-coded polyline on the map so you can see signal coverage across any route. Includes address search biased to your current location.

Dual SIM support
Switch between SIMs to compare signal quality from different carriers side by side.

Designed for Android 10+. No account required. No data sent to third-party servers. Cell lookups use the open OpenCelliD database.