Can you block a mobile’s signal by wrapping it in foil? One test shows you can

In a recent film called The Foreigner which stars Jackie Chan, there is a small scene where the action superstar wraps his mobile phone in aluminium foil in an attempt to block the device’s signal.

It may have prevented anyone from tracking him in reel life, but does it actually work in real life?

The team at Stirr put that to the test. Here’s the verdict: