Huawei introduced a new feature known as reverse (or inverted) wireless charging with the Mate 20 Pro. It means that the new flagship can be used as a charging pad for other devices with compatible technology. However, Android Authority found it to work very slowly for a Pixel 3 in comparison with its own chargers.
https://www.notebookcheck.net/Huawei-Mate-20-Pro-s-reverse-wireless-charging-was-tested-and-found-to-be-extremely-slow.361056.0.html
well, no s*** :D that was fairly evident from the start :D only a noob (or an attention hog in this case) expects 15W wireless charging from a mobile device - not a real journalist.
the function was meant for the wireless earpiece, or in the event which u can help charge up another phone in need. dont think it was meant to work as a super charger. who in the right sense would use the reverse charge function to charge another phone when u have a usb c?
haters...ofc is slower but when u need it's 100x better than its fast charging....when u don't have that one...
Usb-c charging is faster than the inverted wireless !? Ohhh no! Then the inverted wireless charging is no good! No good, I tell you! You better carry the wall and the socket with you that use the wireless charging method! Which, by the way, is no good!
Wow that photo from Huawei is a perfect representation of how to use that function! You and some other dude just stand there holding your phones together and have one awkward chat after another until the phone is just barely usable after an hour or two!