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What is a cell phone jammer
Why Would Someone Use A Signal Blocker?
Mobile Signal jammers are often used in public areas where a phone call would be particularly disruptive because silence is expected, such as in restaurants, and movie theaters to prevent patrons from making calls while enjoying themselves.
Do Signal Jammers Really Work?
Jamming devices overpower the cell phone by transmitting a signal on the same frequency and at a high enough power that the two signals collide and cancel each other out. It’s a called a denial-of-service attack. A signal jammer transmits on the same radio frequencies as the cell phone, disrupting the communication between the phone and the cell-phone base station in the tower.
How Far Does A Cell Phone Jammer Work?
The range of the jammer is dependent on its power and the surrounding environment. A low-powered jammer will block calls within a radius of about 30 feet (10m), while higher-powered jammers can create an area as large as a football pitch free of cellular signals.