Installed the unit about a month ago after reading both pro and con reviews. Given that I have much more than the average person's awareness of RF and antenna issues (I'm a ham radio operator) I figured that those with problems were due to poor antenna placement.Final result: it works great after taking about 3 hours to install and test, start to finish. After climbing on the roof with my cellphone and verifying that I could get 2 to 3 bars, I figured getting that level of coverage inside would be a good goal. That's exactly what I got.Anyone who says they only get coverage within a few feet of the indoor unit are *not* separating the outdoor and indoor antennas far enough apart. I get consistent coverage all the way to our back bedroom, about 45 feet from the unit and through 4 walls. To get that I installed the outdoor antenna on a PVC pipe about 10' above our TV antenna which is on a chimney mount on the roof. The vertical separation between the roof antenna and the indoor unit is about 30'.We have verified service on all the major cell carriers (Verizon, AT&T;, Sprint, and one local carrier) and they all work fine. We have also verified multiple simultaneous cell conversations with no problems.So, bottom line, the unit works as advertised and allows us and our house guests to use their cell phones. Great product.