Mylar Phone Experiment

So we ran a series of tests with mylar (what’s used in space blankets) and this is what we found; wrapping your phone up completely blocks all calls and disables signal all together. But from what we also found is it’ll do the same with just two layers worth. One layer seems to let the call go through maybe because of cracks. But what we conclude is we found a material that can fold up into your wallet and when needed can block GPS and signal.