I just got this today and set it up. I'm not sure why other people had trouble with this thing because it was simple to set up and works great(it is very important that you follow the instructions precisely). Maybe those people had the base station too close to the antennae, if you do this it greatly limits the range of the base unit, it is better to put the antennae on one side of the house and the base unit on the other side, or at least the middle of the house.OK, lets get to it, I live in a apartment with metal siding and I think that the siding interferes with the cell phone reception because I can get 5 bars 3G AT&T; on my iphone 3GS at my windows and outside but nothing in the apartment. So I put the antennae on my window sill and the base unit in my living room and now I have 5 bars of 3G everywhere in my apartment, I am ecstatic(yes it appears to work with smart phones), no more standing at the window to make calls or running to the window because my phone is ringing.This being said remember that this zboost does not increase the quality of reception, it only allows you to bring a good signal to places that do not have a signal, so if the best you can get is 1 bar on the roof of your house then don't expect to use this devise to get a better signal(although I think zboost does sell more powerful antennas), the best you can hope for is bringing that one bar down into your house(kinda pointless).All this being said, if you run the wire along the floor boards you may need more wire, just measure and order extra, It appears to just be coaxial cable wire, but for my needs the 50 feet(at least I think it is 50 feet) that comes with it was enough.