We can see that in the streets, bus stops, movie theaters, etc., almost everyone carries a mobile phone with them. Yes, we all know that misusing our phones can cause serious problems. Today, a cell phone is not just a cell phone, it is more like our friend, closer than a friend. A wifi jammer is a signal blocking device used to block a cell phone in use.
https://www.dojammer.com/wirel....ess-wifi-blockers.ht