I've also experimented with this concept and I found if you first wrap the phone in a nonconductive material like a bandana or handkerchief and then wrap it in aluminum foil it greatly increases the effect. I've built several faraday cages out of metal ammo cans and they work great. I keep the ammo can faraday cage in my vehicle and just throw my phone in the ammo can if I feel like going "stealth mode". Love these kind of projects!
I've also experimented with this concept and I found if you first wrap the phone in a nonconductive material like a bandana or handkerchief and then wrap it in aluminum foil it greatly increases the effect. I've built several faraday cages out of metal ammo cans and they work great. I keep the ammo can faraday cage in my vehicle and just throw my phone in the ammo can if I feel like going "stealth mode". Love these kind of projects!
Makes sense, a little bit of an air gap between the foil and phone would enhance the signal blocking ability. Wish I'd thought of it.
Thanks for your support