Why need a gsm jammer?
In schools. For teachers, 4G networks and smartphones are just tools to distract students' attention. Now, a student can do all that and a 1,000 other things on one screen. How does a teacher of any quality compete with YouTube, Snapchat, Trivia Crack, or even PornHub? So, sometimes schools have to resort to semi-compulsory means of using 3g 4g jamming devices. http://www.perfectjammer.com/all-gsm-3g-jammers-blockers.html
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ключевые слова: why need gsm jammer
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