4 ms·

The carrier needs to remotely tell the device to enter into a special mode, so a faraday bag would be an effectively method to block this.

• jvolkman 10y ago
  Until the next time you take it out of the bag to actually use it.
• kryptiskt 10y ago
  Unless the device is programmed to automatically enter into that mode in the absence of any signal on the assumption that if it is in a shielded location it is likely interesting.