iPhone 8/Plus Does the AirDrop button use battery?

[AMSOS]

If I keep the AirDrop button on all the time, will it consume any battery?

I notice that it only works when the bluetooth and WiFi are on. If both are closed, but the AirDrop is on (i.e. coloured blue) does that mean something is also on at the hardware level?

So, is it just a software switch, or a hardware+software switch (WiFi & BT)?

Thanks

 

[Apple_Robert]

It won’t consume battery.