At the beginning of the mobile communication era, national network agencies auctioned frequencies to mobile communication operators at the highest bid price. At that time, each network operator was assigned a separate frequency for use. Therefore, the current legal status regarding the acceptance and use of handy blockers is as follows: Within the GSM frequency range, only mobile network operators have the right to use the frequency auctioned at that time, and therefore have the right to operate mobile cell phone jammer. The operation of the mobile phone jammer by a third party is the use of frequency without frequency allocation, so it is not allowed. However, these laws differ between EU and non-EU countries. For example, in France, cell phone jammers can be used in movie theaters, theaters, and public gatherings.
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