They removed the tower that was closest to my house which changed our cell signal from 4 bars to 0. I looked all over and ran across this as a possible solution. It took a few months to find anyone that had it in stock but finally did. It was simple to install. Mounted it by out satelite dish so ran the cables down teh side of the house with the those. The trick was to keep the base unit away from anything metal. I actually mounted ours in the basement near my home-office. Now it DOES work. The only option you really have is placement. I just turned on my iphone that's setting next to me (about 12' thru a wall from the extender) and i have 5 bars. If I pick up the phone or carry it around with me it goes down to 2 bars. The problem I'm having is that it doesn't want to stay connected. Sometimes I have to turn off my iphone and turn it back on to get the extender to do it's job. I don't understand why. My wife's Treo doesn't get as good a signal. Point is it does work but I really don't see the range that they advertise or that it's able consistantly keep the signal. It's good for text and email no my phone. It's hit or miss on the actual voice communication. If I use the speaker phone it's better because I'm not moving it around. Point is it's better than nothing.