There seem to be many reasons for people to use portable cell phone signal jammers reasonably and legally, without harming others. If you are hurt by someone else, you can certainly complain about the product. Make sure before you do that that the ranking was intentional but not accidental, and consider whether you actually got hurt, or maybe, just maybe.
If something like this happens to you, you'll need a portable over-the-counter signal jammer. Ever since smartphones have become ubiquitous, situations where only signal jammers have been used have occurred one after another. The academic qualifications of customers are so different, which is why some people are well trained in mobile etiquette and many others discuss their personal, professional or ordinary business activities loudly in public, forcing everyone around them to listen, for example in In trains, subway stations, buses, grocery stores, shopping malls and cafes, you may see people using their mobile phones all the time and chatting wherever there are mobile phone users. All of this has led some people to get their hands on something - a portable signal jammer. Just put it in your wallet, the smartphone can be turned off with the turn of the button, and it can never be reconnected as soon as the jammer is activated. Therefore, noisy jerks must avoid the source.
Most mobile phones use 3G4G signals, and smartphone signal jammer technology is specifically designed to block 2G3G4G signals. We know that a smartphone jammer is a device that emits signals in the same frequency range used by mobile phones, and effectively prevents transmission by causing a strong impact. Another factor is that mobile phones within the range of the jammer will emit signals in the unknown range. Loss of signal in this case simply means poor strength.
You can consult China Mingda to get a large number of mobile phone signal jammers of portable, fixed, adjustable, GPS, Wi-Fi, mobile Bluetooth, RF and other types. Be careful not to use it for crimes. Therefore, please ensure that the content of your activities is in accordance with laws and regulations, otherwise, you will not be responsible for all your illegal activities.