Call Block From Cell Phone Verizon
Although a mobile phone is a wireless communication device used wherever it goes, there is also an invisible line dragging it, which is the mobile phone base station. Whether a mobile phone makes or receives a call, the first step is to establish a connection with a nearby mobile phone base station. If you hold a mobile phone in your left hand and your right hand, and use the left-hand mobile phone to dial the right-hand mobile phone, the electromagnetic waves of the mobile phone are not transmitted directly from the left hand to the right hand, but will be transmitted from the left-hand mobile phone to hundreds of meters away The mobile phone base station, and then make a big circle and transmit it back to the right-hand mobile phone (except for the Bluetooth function). Normally, the base station elder brother and the mobile phone younger brother are chatting hotly. The radio wave signals sent by both sides come and go, but when Call Block From Cell Phone Verizon is turned on, it will "beat gongs and drums" around the phone, and the cell phone jammer sends out more power than the received base station signal. Many times the "noise" radio wave signal, the mobile phone can't hear what the base station is talking about, and cannot receive the signal of the base station normally, the connection between the two is cut off, and the mobile phone will become an island, no matter if you make calls, send text messages or other various functions , are paralyzed. Therefore, operators should issue warm reminders. Because so much noise comes out, not only the signal of the examination room is "shielded", but the wireless signal around the examination room will also be interfered, which seriously affects the call quality of mobile phone users around the examination room. If the call quality is poor, you complain, and the operator is of course anxious. However, this really can't blame the operators! Therefore, once again, a warm reminder, for the flowers of the motherland, please be patient for three days.
The entire frequency band of electromagnetic waves ranges from the smallest few Hz to the largest dozens and hundreds of GHz, and the range is very large, and each segment may be used as a communication signal, but except for a small number of very professional equipment, ordinary Call Block From Cell Phone Verizon are " The voice is not loud enough", "five tones", a mobile phone signal jammer can only block a small part of the frequency band, and communication tools can use the unshielded frequency band to communicate. Of course, all the 2G, 3G, and 4G mobile phone services of several domestic communication companies are concentrated in several small frequency bands, and the mobile phone signal jammers in the examination room can still concentrate on these frequency bands. When the mobile phone jammer is working, it will "sweep" electromagnetic waves from low frequency to high frequency in various frequency bands to interfere with the connection between the mobile phone and the base station. So, I heard that there is a smart kid in ice and snow who successfully completed the arduous task of delivering the answer under the name of wifi. It is estimated that the school was trapped by the black-hearted mobile phone signal jammer manufacturer! Forget about jamming the WiFi band! In fact, there is basically no hope for mobile phone jammers to make mobile phones cheat, but cheaters can also use their own communication tools. Most of the cheating communication tools sold are of this type). The frequency band used by these illegal communication tools can be selected outside the frequency range of the mobile phone jammer, and often violates the frequency band dedicated to the walkie-talkie. For example, some candidates use built-in headphones to receive radio-transmitted exam answers. Sometimes the earphones are so small that they require magnets to suck them out, or a doctor's help to get them out. Alternatively, electronic devices such as receiving modules are hidden in the temples.