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Is there a device that can block the signal?

Wisjhnlk October 2022

Is there such a small device that can block cell phone signals?

jammer-mart forums

Jammer-Mart October 2022

You can search for low-power wifi jammer on the Internet. The frequency emitted by the signal jammer itself interferes with the normal frequency of the mobile phone receiving the base station so the mobile phone cannot be connected to the base station so it cannot normally make calls, send and receive text messages, and surf the Internet.