Bests & Worsts Reviews from Amazon

Stop wasting your money. This is electronic snake oil!!! I'm an engineer with over 35 years experience in RF communication. Trust me; this device will do nothing to improve your reception. In fact if it does anything, it might actually detune your cell phones internal antenna and decrease its performance. The cell phone industry is extremely competitive. Cell phone manufactures spend tens of millions of dollars designing their phones for optimum performance. They employ some of the finest engineering minds in the world. Doesn't logic tell you that if a few bits of foil could dramatically improve a phones performance they would have already incorporated it into their designs?