If I remember correctly, Snowden would put his phone in the refrigerator when meeting a contact at a neutral location like a hotel room. I've also heard of peo

If I remember correctly, Snowden would put his phone in the refrigerator when meeting a contact at a neutral location like a hotel room. I've also heard of people putting their phones in the microwave to take them off the grid. I don't know how well any of that actually works. All-in-all though, I agree that just leaving it at home would be best. Maybe even give it to someone you trust to walk around with it while you're meeting your contact if you're ultra-paranoid.