Cellular Z is a telecom signal quality and Wifi network info channel info software the main functions are as follows:
1.Dual SIM mobile phone network information (SIM card serving cell serving cell signal qualityneighboring cells).
2.Wifi information (connected nearby Wifi list Wifi channel 2.5 and 5 GHz).
3. Current location information GPS Satellites
4. Device information (battery hardware system).
5.speedtest.
6.Map trackindoor coverage.
PS: READ PHONE STATE & ENABLE LOCATION is necessary with out these permissions app can show nothing !!!