a cheap consumer RF meter detects "high" levels of RF from 5+ feet away, at least on the 4 or 5 random units I've tried. So the faraday cage doesn't seem to be doing its job in full.
RF leaks can be pretty directional. So simple tests like this phone test or waving a power meter around aren't terribly sensitive. (But pay attention if you get a test failure!)
There really isn't any substitute for a proper EMC chamber.