Block My Cell Phone Number From Showing Up

Perfectjammer 2022-01-02

As a mobile communication device, a mobile phone needs to establish a connection with a nearby signal tower when communicating, and then access the core network to find the communication destination. In the above process, all information is carried and transmitted through electromagnetic waves. The electromagnetic wave frequency band used by the mobile phone is related to the standard used by the mobile phone and the operator, but in general, the electromagnetic wave frequency band used by the three operators is distributed in 850-4900MHz Scope. The college entrance examination organizer wants to Block My Cell Phone Number From Showing Up shield the mobile phone signal in the examination room, it is impossible to make the 2G/3G/4G/5G signal tower near the examination room not work, otherwise all the communication equipment in this area will not be able to communicate normally. Then there is only cell phone jammer to shield the mobile phone signal in the examination room.

When it comes to shielding mobile phone signals, the first thing that comes to mind is metal shielding, which means that the mobile phone is placed in a closed metal box to block the propagation of electromagnetic waves through metal. However, it is obviously impractical to make all classrooms in the examination room into metal-enclosed classrooms. For example, when a cell phone communicates with a cell tower, Block My Cell Phone Number From Showing Up is like a trickster, deliberately making noise around you. The noise signal is so big that the cell phone can’t hear what the cell tower is saying, and the cell phone can’t hear what the cell tower is saying. In fact, this is not to shield the mobile phone signal, but to obliterate the signal sent by the mobile phone in a large number of noise signals, so as to achieve the purpose of influence. At present, the mobile phone signal jammers used in the examination room are all full frequency bands, which can affect all the frequency bands of the three operators 2G/3G/4G/5G, and WIFI signals and Bluetooth signals can also be shielded.

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