[Ron H.]

Or this

Cell Phone Anti-Tracking Anti-Spying GPS RFID Signal Blocker Pouch Case
https://www.amazon.com/gp/product/B00ITR3KCQ/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1

Works like a charm and it is cheap at under $9.

[rockrr]

Interesting.

I have a small metal box that some Christmas candy came in that’s the perfect size for a cellphone. It works great but I have to remember to turn off the phone when using it to keep the device from trying to find signal - and running down the battery.