I believe that is highly illegal in many countries. Here's what FCC has to say about jammers: https://www.fcc.gov/general/cell-phone-and-gps-jamming https://www

I believe that is highly illegal in many countries. Here's what FCC has to say about jammers: https://www.fcc.gov/general/cell-phone-and-gps-jamming https://www.fcc.gov/general/cell-phone-and-gps-jamming