Not sure if these guys with the negative reviews even tried this, but all I know is that it DID help on my phone. I have a an LG 420G, admittedly an older phone with older technology, and which, much to my dismay when I got it, got no reception whatsoever in my house and at work. I tried it in many locations and at different times. Now, THAT is a product that rightfully got very negative reviews for its reception, as I found out. But, I put one booster on and immediately got some reception at home and at work. I put two on, and now I get very good reception at home and at work. So, my experience is that these do work, at least with some phones, and it wasn't just my belief that it would work. I did do quite a bit of research on this, and I don't see where these boosters are any different from using the paperclip on the antenna of the orginal types of cellphones. At these low prices, you certainly can afford to try it!