Okay - purchased this item for a whole penny when the alternatives I were looking at were a home based singal amplifer ($150 to 300+) or changing wirless networks. Before I installed the signal amplifier I would drop calls, not be able to hear people somethimes, have no signal at all, basically the phone was unusable in my house. Now I am able to make calls and use it again - AWESOME! Signal improvement was 5 bars all the time but I'll take the 1 or 2 bars any day as long as it was SOS with no bars before.