Version 5 is a major rewrite of the CellMapper underlying code and UI.
- Major UI changes
- Read frequency (2G - ARFCN/3G - UARFCN/4G -EARFCN) on Android Nougat
- Faster data uploads and networking
- Geofencing
- Map UI updates and stability fixes
- More accurate Qualcomm frequency reading (root)
- Account statistics in app
- Supports Android 2.3 and higher
- Ads for helping fund further development of CellMapper
- Bug fixes (see change log)
Play Store rating: 4/5 based on 1,415 ratings

CellMapper displays advanced GSM/CDMA/UMTS/LTE/LTE-A cellular network information and can also record this data to allow you to contribute to our crowd-sourced coverage maps.

CellMapper works on both tablets and phones running Android 2.3 or higher.

- Displays low level cellular network information data along with frequency band calculations (for some providers)
- Reads cellular frequencies on certain Android 7.0+, Qualcomm based (root), Sony (root), and Samsung devices (root)
- Displays a map of both coverage and individual tower sector coverage and bands
- Supports Dual SIMs on Android One, Mediatek, Qualcomm, and Samsung Duos devices

Note: The data on the site and within the app is generated shortly after it is uploaded. Locally calculated (less accurate) data is available instantly from within the app.

Currently supported networks:
- CDMA (limited, many phones do not implement the API correctly)
- LTE-A (limited, support on latest Samsung Phones with FieldTestReader)

To start contributing, simply tap on the "Upload" button on the main screen.

Visit our community on both Google+ and on our website


Why does CellMapper need so many permissions?

android.permission.ACCESS_COARSE_LOCATION - To get CellID information
android.permission.ACCESS_FINE_LOCATION - To get GPS location
android.permission.ACCESS_NETWORK_STATE - To get Cellular network informaion
android.permission.INTERNET - To connect to server to download map data / upload data
android.permission.READ_EXTERNAL_STORAGE - To write external CSV file if no internet connection
android.permission.READ_LOGS - To read Samsung Field Test Mode data on Android 4.1 and earlier (despite what the dialog says, the app cannot read your browsing history unless your browser write it to the system log)
android.permission.READ_PHONE_STATE - To read info about airplane mode / network settings
android.permission.RECEIVE_BOOT_COMPLETED - To start at boot time (if enabled)
android.permission.VIBRATE - To vibrate on CellID change (if enabled)
android.permission.WAKE_LOCK - For phones that do not support 4.2+ CellID Support, to ensure they report correct data
android.permission.WRITE_EXTERNAL_STORAGE - To write external CSV file if no internet connection
android.permission.BIND_ACCESSIBILITY_SERVICE - To read field test mode data without root
See available APKs
There's a more recent version available below!

This release may come in several variants. Consult our handy FAQ to see which download is right for you.

August 24, 2016
Android 2.3+
All Releases
July 2, 2019
February 3, 2019
January 3, 2019
December 15, 2018
October 24, 2018
October 23, 2018
October 20, 2018
September 17, 2018
March 14, 2018
March 8, 2017