Mobile phone jammer

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8 bands Jammer model

A mobile phone jammer is an instrument used to prevent cellular phones from receiving signals from base stations. When used, the jammer effectively disables cellular phones. These devices can be used in practically any location, but are found primarily in places where a phone call would be particularly disruptive because silence is expected.


Since these jammers actively broadcast radio signals, they may or may not be legal to possess or operate based on the specific laws of the area one is in.

  • Australia: Illegal to operate, supply or possess[1]
  • Brazil: Illegal, but installation in jails has been proposed.[2]
  • Canada: Illegal, except by federal law-enforcement agencies who have obtained approval[3]
  • EU: Illegal, according to the European Commission's "Interpretation of the Directive 1999/5/EC".[4]
  • India: Illegal by law except for security and military agencies, and usage in jail, theatres, mosques, schools etc with prior permit and jamming strictly limited to the firm perimeter with zero leakage[citation needed]
  • New Zealand: Illegal to sell, manufacture or use.[5] Legal inside jails by Department of Corrections.[6]
  • Pakistan: Illegal to use without permission. The individuals or institutions must get No Objection Certificates (NOCs) before installation of such devices.[7]
  • Singapore: Illegal to manufacture, import, use or sell radio jamming equipment other than by or for supply to a permitted person.[8]
  • South Africa: Illegal. No organisation is allowed to jam cellular signals, and any device which is used to jam signals is illegal. [9]
  • Sweden: Illegal. Legal inside jails and for military use.[10]
  • Ukraine: Legal, planned to be used in schools[11]
  • Italy: Legal to own, but illegal to use as per European Laws. Can be used under strict authorization in exceptional cases by Italian law enforcement agencies, such as Polizia Di Stato and Carabinieri.
  • United Kingdom: Illegal to use, but legal to own. Having been proposed by prison inspectors,[12] installation and use in jails has been legal since the end of 2012[13]
  • United States: Cell phone blocking devices are used by federal officials under certain circumstances.[14] Privacy rights of property owners may affect the policy and application of law within buildings[citation needed]. For radio communications, it is illegal to operate, manufacture, import, or offer for sale, including advertising (Communications Act of 1934).[15] Blocking radio communications in public can carry fines of up to $112,000 and/or imprisonment of up to one year.[16] The Homeland Security Act of 2002 may override the Communications Act of 1934.[17]

See also[edit]


  1. ^ "Notification that the Australian Communications and Media Authority prohibits the operation or supply, or possession for the purpose of operation or supply, of specified devices". Retrieved 8 March 2015. 
  2. ^ Rogerio Waldrigues Galindo. "Bloqueador de celular licitado pela Assembleia é de uso ilegal". Gazeta do Povo. Retrieved 8 March 2015. 
  3. ^ Radiocommunication Act of Canada
  4. ^ "European Commission, Enterprise and Industry, Interpretation of the Directive 1999/5/EC". Retrieved 20 October 2014. 
  5. ^ "Spectrum policy". Retrieved 8 March 2015. 
  6. ^ "Mobiles jammed in prisons". One News. August 21, 2007. Retrieved October 25, 2011. 
  7. ^ Administrator. "Illegal Mobile Jammers to be Removed". Retrieved 2015-08-09. 
  8. ^ "Spectrum policy". Retrieved 8 March 2015. 
  9. ^ "This is who may jam cellular signals in South Africa". Retrieved 8 March 2015. 
  10. ^ "Förbud mot störsändare". Retrieved 8 March 2015. 
  11. ^ Мобилки на тестах заставят замолчать
  12. ^ "BBC News - Jam mobile phone signals in prisons, says inspector". Retrieved 8 March 2015. 
  13. ^ "Page not found". Retrieved 8 March 2015. 
  14. ^ The Boeing Company (11 June 2010). "Technical Approaches to Preventing Contraband Cell Phone Use in Prisons;Docket No. 100504212-0212-01" (PDF). National Telecommunications and Information Administration. p. 7. Retrieved 16 November 2014. Federal law enforcement entities are exempted and permitted to use wireless jamming technologies in critical situations to protect law enforcement personnel and the general public when apprehending suspects 
  15. ^ "Reports" (PDF). Retrieved 8 March 2015. 
  16. ^ FCC: Wireless Services: Cellular Services: Operations: Blocking & Jamming
  17. ^ Marguerite Reardon (6 December 2006). "Company challenges FCC rules on cell phone-jamming gear". CNET News (CBS Interactive Inc.). 

External links[edit]