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About the application:

CellMapper displays advanced GSM/CDMA/UMTS/LTE/LTE-A cellular network info and can also record this data to let you to contribute to our crowd-sourced coverage maps. CellMapper works on both tablets and phones running Android device 2.3 or higher. Features - Displays low level cellular network info data along with frequency band calculations (for some providers) - Reads cellular frequencies on certain Android device 7.0+, Qualcomm based (root), Sony (root), and Samsung devices (root) - Displays a map of both coverage and individual turret sector coverage and bands - Supports Dual SIMs on Android device One, Mediatek, Qualcomm, and Samsung Duos devices - Frequency calculator (GSM ARFCN, UMTS UARFCN, LTE EARFCN, CDMA, and iDEN) Note: The data on the website and within the apk is generated shortly after it is uploaded. Currently supported networks: - GSM - UMTS - CDMA - LTE - LTE-A Visit and follow us: Google+ Fb Twitter Visit our our site cellmapper.net. Permissions Why does CellMapper need so a lot of permissions? android.permission.ACCESS_COARSE_LOCATION - To receive CellID information android.permission.ACCESS_FINE_LOCATION - To receive GPS location android.permission.ACCESS_NETWORK_STATE - To receive Cellular network information 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 Try Mode data on Android device 4.1 and earlier (despite what the dialog says, the apk cannot read your browsing history unless your browser write it to the system log) android.permission.READ_PHONE_STATE - To read details about airplane mode / network settings android.permission.RECEIVE_BOOT_COMPLETED - To begin at boot time (if enabled) android.permission.VIBRATE - To vibrate on CellID change (if enabled) android.permission.WAKE_LOCK - For phones that do not help 4.2+ CellID Help, to ensure they report correct data android.permission.WRITE_EXTERNAL_STORAGE - To write external CSV file and debug report