You may need to make some changes so that teens can drive safely. There are 6 3W high power antenna LoJack 3G 4G cell phone jammers. The high performance of Cell Phone Blocker Directional Antenna cannot block all 3G 4G signals. You can also block LoJack signals. This can completely erode the LoJack CDMA GSM DCS PCS 3G 4G Wimax 4G LTE signal up to 40m. The interference radius at which the signal strength varies from a specific area. With a well-designed cooling system, you don't have to worry about the heat generated by the cell phone jammer you're using. You can easily achieve your goal of running 24 hours a day, 7 days a week without damaging your equipment. Also, design with a car charger and pass it.
And bluetooth software can't, because its frequency is also blocked by Cell Phone Blocker Directional Antenna . The only way to do it is to install a cell phone booster near where the cell phone jammer is used to fight it. When cell phone signal gets stronger, cell phone jammers will be harder to block. Do not bring your cell phone during the exam to avoid cell phone signal interference. Mobile phone jammers are mainly aimed at various places where the use of mobile phones is prohibited, such as various examination rooms, schools, gas stations, churches, courts, libraries, conference centers (rooms), theaters, hospitals, governments, finance, prisons, public security, military centers . The cell phone signal jammer scans from the low-end frequency of the forward channel to the high-end frequency at a certain speed during operation. This scanning speed will cause garbled interference in the message signal received by the mobile phone, resulting in the mobile phone being unable to establish a connection with the base station. The mobile phone is shown as searching the network, no signal, no service system, etc.