Most modern GPS-enabled devices do not rely entirely on satellite signals for location information. The cell phone signal jammer must be placed in a dry and ventilated place, avoiding direct sunlight and heat sources, and it should not be exposed to moisture or corrosive substances. If you want to protect yourself from surveillance and avoid being tracked while driving or walking around town, you should use a GPS jammer so others can't track your movements. It is important to keep the storage temperature within a certain range.A portable GPS jammers for cars called a car jammer is designed not only to jam any GPS signal, but also to detect the car and record its location by sending electromagnetic waves.The magnetic field will affect the normal working frequency of the machine. If you want to block cell phone signals in a room, a portable cell phone jammer will suffice. Second, if you want to use your cell phone jammer at work, you should put it in a place that is not too crowded, as it can affect other people's business.
