Very effective! It is a bit heavy for home use...

I'm so glad I made the right choice!

High quality GSM Jammer! it works well, 3G 4G CDMA GSM Wifi signal can't work on my phone!

I'm glad it works as described!

No more interruptions from my phone, and now I can finally get a good night's sleep!

I am a teacher and after getting a cheap cell phone jammer, I use it in class and it keeps the students in order. Can't cheat on exams! ! This signal jammer is always in good working order, well done, this phone jammer is really great for use in the classroom! Thanks!