We live out in the sticks, however there is a cell tower within sight... our cell phones would just drop out on us at times and I purchased this piece of equipment to assist us... This is an expensive piece of garbage.... Like so many other things on the internet, it falls way short on what it promises. To troubleshoot, you must be able to follow the various sequence of blinking lights that change colors to determine what is happening... good luck with that one.... If you have a single level home. You are out of luck as this unit requires that you place the antenna at least 20 feet in the air. If you do not have an attic, you are screwed. If you home is not high enough you are screwed. No difference in the signal level and our calls still continue to drop on a regular basis... don't waste you money on this junk... try to find a more sensetive phone with better reception...