Try this product, it is very good,Signal Jammer
Some taxi fleet operators to install their own cell phone signal jammer, designed to prevent the use of mobile phones while driving on the way to improve the safety index.
Why can not we use the cell phone signal jammer in public places, such as public transport vehicles. Is it illegal to do?
I'm curious how much can the Jammer shielding in the end range, is not there can be 1 km away, it would be too crazy
Let us look at Cell Phone Jammer is how it works.
Copyright © 2014 adapter-battery.com. All rights reserved.