What Happens I Block Calls On My Cell Phone
Active, low cost, just buy What Happens I Block Calls On My Cell Phone , triple play, you need to turn on the power of the mobile phone jammer when you need to shield the mobile phone signal. The principle is to interfere with the registration of the mobile phone to the operator's base station within a certain range to achieve the effect of disconnecting the network, just like the mobile phone jammer used in the examination room when there is no signal in the college entrance examination or national examination. The price of mobile phone jammers is not high, only 400-500 yuan. 2. Passive type. If you need to permanently shield the wireless signal in the room, you need to build a shielded room, that is, install metal shielding plates or shielding nets on the 6 sides of the room, and ground them well. The principle is to ground all radio wave shields outside the shielded room. Make the wireless devices in the room unable to receive external radio wave signals. However, the cost of this method is relatively high, and the construction of a shielded room varies from tens of thousands to hundreds of thousands depending on the cubic area of the room. In addition, the ventilation or lighting of the shielded room will be affected. cell phone jammer
It is unreasonable for the school to keep What Happens I Block Calls On My Cell Phone on for a long time. Normally, it can only be turned on during the exam. You can go to negotiate and communicate with the school. If they don't cooperate, then you have a way. Because of the working principle of the mobile phone signal jammer, generally speaking, the frequency emitted by the mobile phone jammer interferes with the normal frequency of the mobile phone receiving the base station, making the mobile phone unable to connect to the base station, and thus unable to make calls, receive and send text messages and surf the Internet normally. So if you want your mobile phone to work, unless the mobile phone signal is very strong, that is to say, your mobile phone signal at home is good, then you have to install a signal amplifier. For example, if a mobile signal amplifier is installed in a building, then a mobile phone is installed. It is difficult to block. If the signal amplifier of China Unicom is installed, it is difficult to shield the mobile phone of China Unicom.