Many people think they will be protected by limiting cell phone usage and perhaps blocking incoming EMFs from nearby cell phone towers with modern Faraday-cage type products. That’s a good idea. However, you do not want to stop there.
Even with everything unplugged, your home can be full of low-frequency electromagnetic fields from unsheilded wiring and “dirty electric.” The EMF survey will locate where those levels are highest and suggest ways to mitigate the effects, like using DE filters and protective switch-plates or removing old fluorescent light fixtures.
The highest concentrations of EMF radiation within the home are often in areas with wireless and wifi devices. While the best wifi protection is switching to hard-wired options, it might not be possible for you, so wifi protection will likely be a necessary EMF protection for your home. Fun science fact: the carbon in carbon-based sheilding paint can absorb some of the EMFs created inside your home, as well as protecting against those from outside. Of course most of us are on a budget, so before painting the entire house inside and out, the first step is to know where that invisible danger actually is coming from with an EMF survey.