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What is a cell phone jammer used for
JeffreyBarton
June 2018
I have learned some information about mobile interference devices on the Internet. But what's the use of such devices?
Perfectjammer
June 2018
Hello, Jeffrey
As a very popular device,
cell phone signal jammer
is used in various fields.
For example, library, prison, classroom, church and other places. In addition, the government and private enterprises are also purchasing such products on a large scale
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