Qualitative of Mobile phone jammer
A cell phone jammer or blocker is a device that intentionally transmits a signal on the same radio frequency as the cell phone, disrupting communication between the cell phone and the cell phone base station, effectively disabling cell phones within range of the jammer, preventing them from receiving signals and transmitting they. Jammers can be used in almost any location, but are primarily used in places where phone calls are particularly disruptive due to the need to be quiet, such as entertainment venues.
Mobile phone jammer is illegal to use
Because they disrupt the operation of legitimate mobile phone services, the use of such shielding devices is illegal in many jurisdictions, especially without a license. While running, such devices also block access to emergency services.