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Portable Cell Phone Jammer 8 Band Phone Jammer

Erc Unblocks Call Blocking On Cell Phones Block All Signals

Schirmer Guido 2022/05/17

In order to know what the function of blocking mobile phone signals is, let's first understand how mobile communication works. As a mobile communication device, a mobile phone needs to establish a connection with a nearby base station first, and then access the core network to find a communication destination. In the above process, all information is carried and transmitted by electromagnetic waves. The electromagnetic wave frequency band used by the mobile phone is related to the standard and operator of the mobile phone. But in general, the electromagnetic wave frequency bands used by the three operators are distributed in the 850-4900MHz range. If the organizer of the college entrance examination wants to block the mobile phone signals in the examination room, it is impossible for the 2G/3G/4G/5G base stations near the examination room to not work, otherwise all the communication equipment in this area will not be able to communicate normally. That's the only way to block cell phone signals in the exam room. When it comes to shielding mobile phone signals, the first thing that comes to mind must be Erc Unblocks Call Blocking On Cell Phones , that is, placing the mobile phone in a closed metal box to block the propagation of electromagnetic waves through metal. However, it is obviously not practical to make all the classrooms of the examination room into metal-enclosed classrooms. then what should we do? It is very simple, only a small cell phone jammer can block all mobile phone signals in the examination room.

Currently, each of us has a mobile phone. From previous 2G phones to now 3G and 4G phones, some people have even started using 5G phones. No matter what phone you're using, even high-end phones won't have a signal when the cell blocker is on. It is also understandable that cell phone signal blockers are the natural enemy of cell phone signals, but there are so many types of Erc Unblocks Call Blocking On Cell Phones on the market that we don't know which one is better. Cell phone jammers are rarely used. The places that are often used at ordinary times may only be companies engaged in scientific research. There are also research and development departments on state secrets. The other is the military, where security and confidentiality-related places have set up cell phone jammers. It is better to have this brand in the signal jammer in hand. This brand is also sold at different prices. That's because their performance is different. Let's take a look at the prices of cell phone jammers.