Residential Systems, John Sciacca had a great review of the zBoost TRIO SOHO. John states:
“Ultimately zBoost worked as promised and definitely improved cell reception, but set up and installation are crucial and can be tricky.”
We all have clients married to their cell phones, but they receive spotty reception inside of their 
homes. Whether the home has a metal roof or concrete walls or is just in a fringe area, reception inside many homes is terrible. In fact at my company’s CI showroom, my desk is located in a periodic cell dead spot where the signal just totally drops. A cellular booster is a relatively simple system that consists of an external antenna that grabs a stronger signal and then carries it via coax cabling to an amplifier that boosts the signal for better coverage. While the ZB575 boosts cell signals for all carriers, it is available in specific AT&T and Verizon models to boost 4G LTE data for those carriers.
Antenna positioning is critical. In fact, positioning the antenna is the single most important thing in the entire install. Fortunately there are a variety of tools to help with this. iPhone users can dial *3001#12345#* and then press “call,” which places the iPhone into field test mode and measures signal strength in dB–a far finer measurement than the five bars. (Android signal strength is found under Settings – About Phone and then either under Network or Status depending on the model.) Now you can walk around and locate the strongest (lowest –dB rating) signal.
Please read the entire review at http://www.residentialsystems.com/new-products/0019/zboost-trio-soho-cell/data-booster/86111
zBoost TRIO SOHO Set up Overview
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