The Network Survey Android App provides a basic survey capability for logging and analyzing Cellular networks, Wi-Fi networks, Bluetooth Devices, and GNSS constellations. Capture detailed records of signal strength, network information, and device data. All data can be conveniently logged to GeoPackage or CSV files for offline analysis. Alternatively, choose to live stream the data via MQTT or gRPC protocols for real-time monitoring and integration with other systems.

This app has the ability to access your device's location in the background. The background location permission is needed to start Network Survey at boot. More information can be found in the App's privacy policy located at https://www.networksurvey.app/privacy-policy

The cellular logging feature logs several details about the current serving cell, and then some basic information about the neighbor cells. This app won't log all 5 cellular protocols at once. Instead, it will only log information about the protocols that are current connected. If logging for one specific protocol is desired, then the phone must be locked to that protocol (try using *#*#4636#*#* from the dial pad).

The cellular survey records can be streamed to either a gRPC server or a MQTT broker. This is not on by default and a gRPC server or MQTT Broker needs to be setup for this feature to work.

See https://github.com/christianrowlands/network-survey-messaging for more details on setting up a network survey gRPC server.

See https://mosquitto.org for information on setting up a MQTT Broker.

A bonus feature of this app is its ability to create a Call Detail Record (CDR) file. If enabled, CDR events are logged to a CSV file.

The app also has a calculator that converts an LTE Cell ID to the corresponding eNodeB ID and Sector ID, and a calculator that converts an LTE PCI to the corresponding Primary Sync Sequence (PSS) and Secondary Sync Sequence (SSS).

I hope you enjoy this app as much as I have enjoyed writing it. If you have any feature requests please feel free to reach out by creating a GitHub issue at the link below.

The source code for this app lives here: https://github.com/christianrowlands/android-network-survey

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