Maybe I had a defective product. IDK. It didn't work. I have the small, gray box, Wilson mobile booster and that one works fine but in comparison in a poor signal area, I got 2 bars with my gray box and no bars with this one. It also became extremely hot. Way hotter than it should be. These boosters typically do get hot but this one was far past that line. My phone shut itself down after about 5 minutes from getting too hot with it. I returned for refund. Amazon was great with the return. No hassle return. Thank you Amazon.