With Samsung nuking the ability for non Samsung devices to wireless fast charge, I understand that a charger needs to be both WPC (Qi) certified and Samsung certified. A post on here says "or" but I suspect they mean both. A high bar indeed especially as, to my knoweldge there are no 3rd party wireless chargers that are Samsung certified.
I'm not happy about this but can see requests to remove this firmware change are met with fud or ignorance. But is there a list of certified chargers available somewhere?
My update to Oneui 3.1 broke it. I have 3 far cargers and they all revert to slow. You'll be able to see the effect of it if you turn the screen off and place the phone on a charger. For two seconds the message at the bottom of the screen will state fast charging. Then the message dissapears and the charging time increases.