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Experts said the test group, GPS satellite navigation product problems than expected, especially not accurate navigation serious problem. The GPS jammer emergence of a more deepened the occurrence of such events.
GSM is the Global System for Mobile Communications acronym, meaning global mobile communication system, is one of the world is major cellular systems. GSM Jammer is shielded equipment such signals.
Cell phone blocker to block the 3G 4G mobile phone signal similar, in the process of buying, we should note that we need to distinguish the type of signal blocking.
France legalized cell-phone jammers in movie theaters
In Canada, we care about the issues discussed aspects of the signal, mobile phone jammer are very small areas and purposes.