How to use the Faraday bag
First put your mobile phone into this Faraday bag, fold it once, then fold it again to make the Velcro fully fit, then press and stick it firmly. Then use another cell phone to call the cell phone in the Faraday bag. You will find that the call cannot be dialed and the signal is blocked.
If you can make a call , plz follow the steps above to try again.