Introduction. Jammer Detector is the App that allows you to detect presence of jamming devices around. In that situation your mobile phone loses the ability to make a phone call. If it happened, the App gives you a visual or sound message. The time for reaction on a working jammer depends on hardware communication part of your device and typically can be in 30-60 sec range. Features. Completely NO ads. The app records an event log and writes the location where a jamming device or 'out-of-