NetMonster

NetMonster collects, shows and stores information about nearby cell towers. Each tower has its unique set of identifiers and NetMonster will show you them. During collection it automatically attempts to guess location for each tower. In select areas and countries precise locations are available.

All cells that your phone actively connected to are continuously saved into log till you terminate the app. You can manually correct the location, browse cells on the map, filter them and eventually export all the data.

NetMonster also visualises signal changes and provides short description what given measurement means and how it affects reception quality or theoretical maximal speed.

Supported networks are GSM, CDMA, WCDMA, TD-SCDMA, 4G LTE, 5G NSA and 5G SA. When it comes to LTE, NetMonster also detects aggregated carriers (so-called LTE-Advanced). For areas where 5G NSA is available you can see if NSA is in use or just deployed, carrier aggregation in 4G+5G NSA is also available.

NetMonster is based on open-source library NetMonster Core:
https://github.com/mroczis/netmonster-core

Want to get updates first? Join beta channel!
https://play.google.com/apps/testing/cz.mroczis.netmonster