Reviews: Handy 4G Wimax 3G Mobile Phone Isolator with Cooling Fan

recommend rating

"While it's a bit bulky, not really something you can carry in your pocket putting in anywhere exposed does the job extremely well. I'm on a floor which is much larger than 20Meters and is all open floor plan, I turned it on and sure enough within a few seconds people were looking at there phones with that dumb look on their face trying to redial over and over until they realized they had no signal lol. I would recommend this jammer for sure. The only issue I noticed is that with T-Mobile the service didn't go out to 0 bars, went down to 1 but wouldnt place or receive calls, 4g went offline asap.
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