Signal Detector

Indicates cellular signal by sounds, so you do not have to look on the screen.

First row - service type, ambient sound:

* No Service - silence

* 1x/E/GPRS - ocean

* 3G - birds

* 4G/LTE - buzzer

Second row - numeric signal strength, dBm. Also each dot on the indicator adds 20% to volume for service type ambient sound. The app makes special tone indications when signal goes one dot up or down.

Third row - "ping" time. Response time in seconds for ping to Google DNS server 8.8.8.8. App tries to do a ping every second if there is no request in progress. Each successful "ping" is indicated by a beep sound. Also it makes a special buzz for first failed ping after successful one.