Many people are severely affected by cell phones. Some people spend a lot of time on the phone. Some people get their cell phone jammers. It can be freely used as a phone signal jammer anywhere. Useful tool for making changes. It can interfere with UHF, VHF, RF and other signals. Turn on Cell Phone And Wifi Blocker Diy to completely block surrounding cell phone signals. Your health will improve. It depends on the signal strength in the specified area. Many electronic products have entered people's modern life. It will become more and more convenient in your daily life. However, it can cause many problems. Information leaks and GPS tracking on mobile phones are more frequent. Technology and performance continue to mature. It is a threat to our lives. cell phone jammer has become a good assistant for people. It interferes with CDMA, GSM, DCS/PCS, 3G and Wifi signals. Really the best option.
Generally speaking, the Cell Phone And Wifi Blocker Diy in the test room is to block the mobile phone by interfering with the mobile phone signal in the designated frequency band. The spectrum of the previous mainstream network 4G is generally between 1700MHz and 2600MHz. For example, China Mobile's 4G is mainly in the two frequency bands of 2320-2370MHz and 2575-2635MHz, while China Telecom is in the two frequency bands of 1755-1785MHz and 1850-1880MHz, and China Unicom is in 1955-1980MHz and 2145-2170MHz. The examination room only needs to perform electronic interference on the above frequency bands, and the mobile phone 4G network cannot be connected, so as to achieve the function of shielding the signal. But the problem is:
