3 ms·

It's actually hard & somewhat expensive to buy a foil pouch that cuts of signal completely. I've bought a $20 one to simulate cellular cut off situations, and

• troymc 14y ago
  Maybe try wrapping your phone in tinfoil? If that doesn't work, maybe try two layers. And if that doesn't work, perhaps you could also try a tinfoil hat.
  • mahyarm 14y ago
    Tinfoil doesn't work at all, since the stuff sold in stores today is actually aluminium foil and doesn't block radio signals. Go try it with your phone, use the entire roll, you'll see pretty quickly it doesn't do much. I bought the pouch for software development reasons, not paranoia. One that works properly is something around $100 dollars. Leaving your phone in that kind of pouch is actually not that great for battery life, since I think the phone searches for towers on full radio strength. It's better just to activate airplane mode.
    • excuse-me 14y ago
      The stuff has been aluminium for a century, but that doesn't make any difference to its RF blocking abilities - Al is actually rather better. The trick is to wrap it so that there are no gaps, phone signals will get out of tiny gaps. ... of course before even tin "tinfoil" things were tough. Mother would be stood over her anvil in the kitchen battering the wrought iron over the tops of left-overs