📡 NEW: 5G SA Events in the 5G Lab

The 5G SA Events feature has graduated from Beta and now lives in the 5G Lab tab — right alongside the NR Cell ID Format tool and SliceRunner.

Expanded Storage: Track up to 500 unique 5G SA sectors (previously 200) — perfect for drive testing and coverage mapping across larger areas.
Faster Performance: Events are now stored in a dedicated database rather than a single file, meaning quicker loading and no lag when you have hundreds of logged towers.
Seamless Migration: Your existing logged events transfer automatically on first launch — no data loss.

🗺️ IMPROVED: Signal Location Mapping

Each logged 5G SA sector now records GPS coordinates for its Best, Worst, and Last detected signal. You can:

View on Map: See exactly where you got the strongest and weakest signal from each tower, with colour-coded markers (green = best, red = worst).
Export to Gallery: Save the signal locations map as an image directly to your phone’s gallery — great for sharing coverage reports or documenting dead spots.
Capture Now: Tap to instantly log the current tower’s signal and location — updates the existing record if the tower is already known.

The detailed tower view now groups raw data by its Android API source:

signalInfo — Raw signal strength readings
cellIdentity — Band, ARFCN, and radio parameters
signalStrength — Parsed CSI and SS measurements
cellInfo — Full cell registration details
serviceState — Network registration domains (WiFi, Voice, Data) now clearly labelled so you can see which is which at a glance

Device information (model, Android version) is hidden from the display to reduce clutter but still included in JSON exports for reference.

The Mast Names feature now remembers your preferences and shows more useful information:

Persistent Settings: Your sort order (A-Z / Nearest), distance filter (All / < 1 mi / < 5 mi), and search query are now remembered between visits — no need to re-enter them each time.
Carrier Name Display: Each tower now shows the network operator name (e.g. “O2”) below the MCC-MNC, making it easier to identify which network a tower belongs to.
Test Network Support: For private or test networks (like MCC 001), the carrier name is automatically cached from your SIM when it’s active — so it still displays even when the SIM is switched off.

You can now view all your saved towers on a single interactive map — perfect for visualising coverage in your area.

Enable Mast Names in Settings → Mast Names. Once enabled, CellInfo automatically logs the strongest signal location for every tower you connect to while the app is running.
Open the Mast Names tab — you’ll see the “Mast Location Map” card at the top of your tower list.
Choose what to display using the radio buttons:
- All — Shows both your recorded signal locations (green) and online database positions (blue)
- Strongest — Only shows where you personally recorded the best signal from each tower
- Database — Only shows estimated tower positions from online lookups (OpenCellID)
Filter first, then map — Use the search bar or distance filters (< 1 mi, < 5 mi) to narrow down which towers appear. The map only plots the currently visible towers, so you can focus on a specific area or operator.
Tap any marker to see full details: tower name, carrier, MCC-MNC, eNB/gNB ID, bands, signal strength, time recorded, and GPS coordinates.
Export to Gallery — Save the map as a PNG image with a colour key and attribution. Great for sharing coverage reports or documenting signal quality in an area.

Import: Tap the download icon (⬇️) in the Mast Names header to import a previously exported file. You can choose to merge with existing data or replace everything.
Export: Tap the upload icon (⬆️) to export all your saved towers as a JSON file. This includes names, signal history, and all location data.
Backup & Restore: Export before reinstalling the app or switching devices, then import on the new device to restore all your tower data.

The more you use CellInfo, the more towers get logged automatically — just keep the app running as you move around.
Use the “Nearest” sort to find towers close to your current location.
Search by eNB/gNB ID or MCC-MNC to quickly find specific towers.
Tower search results (from the Towers Map or Search tab) automatically save the database location to your Mast Names entries.

This release focuses on making 5G SA analysis more powerful and accessible. The 5G Lab is your home for advanced NR tools — more coming soon.

Update the app today and let us know if you find a 5G Standalone cell in your area