BTS Tower Lookup Extension [FREE]

Hello App Inventor Community,

I would like to share a simple extension that I've created for looking up the location of a BTS (Base Transceiver Station) using an external API. This extension can be used to retrieve location information based on MCC, MNC, LAC, and CID. Additionally, the extension handles cases where the BTS is not found.

Example Usage:

Provided Events:

  • GotBTSLocation: Triggered after obtaining BTS location information.
  • BTSNotFound: Triggered if the BTS is not found.
  • ErrorOccurred: Triggered if an error occurs during the BTS lookup process.

Note: This Extension Using Google Database Service (Cloud Console)

Extension Link:
com.rasitech.btslookup.aix (9.0 KB)

I hope this extension proves useful to the community. Please let me know if there are any suggestions or improvements that can be made.

Thank you!


can you explain to us what is BTS Tower? and MCC, MNC, LAC, and CID?

and this for what kind of app developer?

MCC, MNC, LAC, CID is a code ID for BTS Tower

like this

Your telephone number or internet network must be connected to that tower

so this is only for look up in a table? it has to be from internet? not possible from local ? and this look up talbe will change often?

Yes, this data matches what is contained in the database and will always be updated because it uses Google database services

maybe you'd better to mention where this data come from in first post.


How can we get MCC, MNC, LAC, and CID so we are able to use your extension?
Please show us some relevant blocks
Thank you


Moi, j'utilise l'extension de @Juan_Antonio

Voir ici


1 Like

You can get it using a BTS radio network capture tool or an Android application to capture your nearest BTS ID

it only gets the ID of the closest BTS to our cellphone, not to see its location again.

interesting solution