
Nevertheless, some international websites are selling the devices and allowing US customers to purchase cell phone blocker over the Internet. But it is against the law to import cell phone blocker or cellular blockers into the United States. So customs agents are trained to be on the lookout for them or any other devices that can block cell phones.

The principal difference is that cell phone blocker knock out all cellular service. So people can not even make 911 calls, a condition that creates great risk. But a cell phone detector only receives signals. As a result, it does not interfere with cellular service.If you have any questions about cell phone blocker or cellular blockers, please feel free to send us a request for information, browse through our FAQ page.
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