How to make a cell phone jammer? In China to buy a small module, so you have a test board, and can be assembled according to their needs a 4g jammer.
Teachers in the school have the right to use Signal Jammer, so we can not use the phone when the class, this is too make people mad.
We often receive military orders, are used to shield the phone bombs, as a good cell phone jammer factory, we need to ensure quality.
I can not admit that sometimes you have to use illegal means to prevent the use of some signals, similar to the invigilator in the examination room, this time we need to use a Cell Phone Blocker
Signal blocker in public places is illegal. However, if there are government documents permitting you can use.