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. Features - 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: - GSM - UMTS - CDMA (limited, many phones do not implement the API correctly) - LTE - 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 Permissions 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

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    Nothing here…Users haven’t shared any strong points yet

  • Keep in mind
    It does absolutely nothing except show my current location

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