Does Bluetooth loses connectivity in tunnels and underground?

[Andrey1]

I was thinking of getting myself a pair of Bluetooth headphones and I was curious if they lose connectivity with the devise when I go underground or in to tunnels. Reason being is that I have to travel a lot by train. Thanks

 

[DavidP]

I doubt it would make any difference, assuming both connected devices remain close to each other.

 

[STEPHEN]

If the device and headphone are both together, no problem.

if the headphones were at the other end of the carriage from the device, for example if there is a buffet car, you could expect connectivity to be unreliable and mighht well notice some change in connectivity in tunnels.

 

[Stefanie]

Depends. Mine doesn't