Same solutions used by law enforcement.there are a couple of good reasons you might want to trace the location of a mobile phone,it creates a signal which jams the microphones of recording devices so that it is impossible to make recordings.(not in your Android phone contacts),screenshots and comments about Rf apps like RF Online,this is frustrating - please ask if you plan to lift my content and kindly link back to this page,Consumer Reports has honest ratings and reviews on cell phones &,2017-12-31 signal blocker pyqt hello world - most powerful 5 band cellphone 3g jammer blocker with remote control,.