After powering on the Coverage Unit (it includes a power cable), we fiddled with the position of the Network Access Unit until we got better signal strength on our cell phone. There's an indicator on the Network Access Unit that lets you know if the product performance is good--meaning that there isn't any network interference. Moving the Coverage Unit further away from the Network Access Unit will improve its performance. Mount the two units to the wall to get maximum performance and signal strength. We weren't willing to do that in our own homes, but just placing the units on shelves seemed to work well.
The signal booster worked. Whereas before we'd seen about two bars of signal strength on our T-Mobile Sidekick 3, now we had a full five-bars of signal strength. The same goes for the signal strength on our Samsung MM-A900 from Sprint. We should also note that, as promised, the data speeds on our devices seemed to improve remarkably. Web pages would load in half the time that they had with lower signal strength.
Overall, we were pleased with the performance of the Spotwave Zen Z1900. It delivered on its promise without any interference with household electronics. We would recommend this if you have poor cell phone reception in your home and about $400 to spare.
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