Can A Blocked Cell Phone Be Unlocked Blocked Signal
As long as the mobile phone signal blocker is turned on, all mobile phones within its blocking range (China Mobile, China Unicom, China Telecom) cannot be used normally. You said that 4G can be used at a long distance, because the shielding range of Can A Blocked Cell Phone Be Unlocked is limited, and the mobile phone can be used normally as long as it exceeds its range. Generally speaking, the working principle of mobile phone signal jammer is that the frequency sent by Cell Phone Jammer interferes with the normal frequency sent by the mobile phone receiving the base station, so that the mobile phone cannot connect to the base station, so that it cannot make calls, send and receive text messages and surf the Internet. If you want your mobile phone to work, unless the mobile phone signal is strong, that is to say, there is a signal amplifier nearby or in the building. For example, if a mobile signal amplifier is installed in a building, it is difficult to block cell phones. If it is China Unicom's signal amplifier, it is difficult to shield the Unicom mobile phone. If it's a telco, the same goes for telecommunications.
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