Cell phone jammers are now being used in many places, where allowed by law.
Temples and churches and those who frequent them tend to get upset when a a cell phone starts ringing right in the middle of the service. Unfortunately, this is a common occurrence, and inappropriately, people send text messages during services too! Cell phone jammers are used to put an end to this.
How about taking your family out to eat at a place where the guy next to you is cursing someone out on the other end of his mobile phone? Or, students that text message each other using mobile phones during exams? Cell phone jammers end this problem as well.
All of these situations are uncalled for, and could be eliminated with the use of cell phone jammers.