On 02/15/2017 05:13 PM, grarpamp wrote:
 None of the phones I've wrapped in a single layer of standard weight foil folded over once at the edge have been able to send or receive calls / sms / data (cellular or wifi).
I'd been waiting for someone to say this. The RF power output is pretty low to start with and almost any metal surrounding, especially if it's grounded, would mean the surveillance device would have to be with the phone... even if the cage leaked the signal strength would be almost nil.
But don't forget the "Aftercare"... It ALWAYS works.