There are many cell phone blocker and universal mobile phone jammers, including the world's smallest mobile phone jammer. A mobile phone jammer is also hidden in the picture. The feature of this powerful GPS, mobile phone and 3G signal jammer is that it is very powerful with several antennas to provide a true working radius of 20 meters.
Compact and easy to carry, this high-power GPS, cellular, and 3G signal jammer can block GPS signals, 3G signals, and mobile phones (GSM, CDMA, DCS, PHS). With a jamming radius of 20 meters, it blocks about four times the area of other mobile phone jammers published on topsignaljammer.com.
High-power GPS, mobile phones, and 3G signal blocker have built-in rechargeable lithium-ion batteries for power. It comes with an AC adapter and a car charger, each of which can be used for charging. It also comes with a leather case and carrying strap.
Such GPS jammers have many uses. As shown above, this is very useful for law enforcement agencies. Blocking mobile phones and GPS signals can ensure your safety. Therefore, it is frequently used by police and the military and is also used in prisons to prevent prisoners from communicating with the outside world.
Another common use of jammers like these is that someone (ie, spouse, police, private detective, etc.) has installed a tracking device on you or your car.