I've connected my phone to charger overnight and put my son's phone on it and son's also charged like 10 %. Looks like that wireless charging also works between phones.
@Mac_CZ
People be like:
Superconductors could change the world. Just immagine transferring power with no losses.
And then, they put 2 phones on wireless charger 
@LukeAlmighty It was wired charger and I've put the phone on the top of the other because of space issues. I didn't know it'll charge.
