How to block wifi signals? Can cell phone signal blockers block wifi signals? from dojammer's blog

Cell phone signal blockers are already very common information confidentiality devices in some special occasions, but their working conditions have also attracted everyone's attention. In addition to being able to block cell phone signals, can such devices also block wifi signals? These questions are also questions that many netizens want to know. To fully understand such questions, we must first understand the working mode of cell phone signal blockers and the interference frequency bands and the left and right frequency bands of WIFI signals. Now let the professional technicians of Chengdu 8341 Information Technology Co., Ltd. explain the answers to you.

To understand how to block wifi signals and the working method of mobile phone signal blocking, you need to first understand which frequency bands need to be blocked. At present, there are three major network operators in my country: China Mobile, China Telecom, and China Unicom. The signals of these three operators have wide coverage and use many frequencies. Therefore, if the cell phone signal blocker wants to meet the requirements of shielding the network, it is necessary to target the frequency bands of these three operators. The three major operators have 2G, 3G, 4G, and 5G frequency band networks. These frequency bands are as follows: CDMA870MHz-880MHz, GSM935MHz-960MHz, DCS 1805MHz-1920MHz, TDSCDMA2010MHz-2025MHz TD-SCDMA 2010MHz-2025MHz, CDMA2000 2110MHz-2125MHz, WCDMA 2130MHz-2145MHz, 4G1 2300MHz-2390MHz, 4G2 2555MHz-2655MHz. However, there are two frequencies currently used for wifi signals: 2400-2483MHz and 5725-5875MHz. In fact, it is very simple. The cell phone signal blocker does not block wifi signals. It only targets mobile networks. After the network sent by the base station is interrupted, wifi will also lose its function.

It is not difficult to use a cell phone signal blocker to block wifi signals. The cell phone signal blocker originally comes with a 2400-2483MH7 frequency, so it can block a lot of 2.4G wifi frequency signals, but the 5725-5875MH7 frequency band is gone. Because the R&D cost of the equipment is too high, many customers cannot accept it.