Waiting for the next Snowden.
In the meantime, you can use your smartphone inside a Faraday cage. Wrapping it in aluminium should help.
In the meantime, you can use your smartphone inside a Faraday cage. Wrapping it in aluminium should help.
Or, more accurately stated, "you can't".
The pinnacle of democracy: waiting for someone else to do it.
Pro tip: Refrigerator doesn't work, but cocktail shaker apparently does. (http://makezine.com/2013/06/26/edward-snowden-can-a-refriger...)
Maybe if you are really in that sort of situation you should just do both, just in case.
I think it depends on the model. I tested a couple of phones, including a blackberry, inside my fridge a few years before Snowden did his thing. We put them in and then tried to call them and none of them rang. But the fridge was one of those trendy stainless steel models. Perhaps a more ordinary fridge would have less effect on signal strength.
The only really safe assumption to work from is that all Turing-capable devices are evil.