The U.S. Department of Homeland Security (DHS) has warned of an increasing influx of China-manufactured devices that block phone calls and other radio signals being smuggled into the United States. “Signal jammers have been used by illegal aliens across the
The U.S. Department of Homeland Security (DHS) has warned of an increasing influx of China-manufactured devices that block phone calls and other radio signals being smuggled into the United States. “Signal jammers have been used by illegal aliens across the