May be placebo. Just because you don't get the notification doesn't mean it's not fast charging. Only way to really know is download ampere and compare charging rates to a phone that does report fast charging.
My phone doesn't get any type of message anymore after certain mods, however, my phone still charges at roughly 3.0 amps
I can confim this issue.
Google Pixel with Android P Beta 3 is not fast charging.
I tested it with a power meter and it showed 8 Watts, which is very low compared to fast charging which uses 18 Watts.
Before I joined the beta program it worked just fine.
Using default power brick btw.
Can also confirm it's not working on DP3. Doesn't matter charge level, cable or power block it's only drawing about 500ma to 800ma. It is agonizingly slow. Fell asleep waiting for some power. Woke up from the nap and thought, "Alright, it's gotta be at 100%." Nope just 53%
I figured mine out, I think. I'm assuming there is some type of thermal throttling in the Quickcharge spec, I haven't looked.
It's hot where I live and the aluminum back on the phone seems to absorb every bit of heat when I go outside. It's about 100°F (38°C) at 8:20PM so it never really cools off. When I'm back inside it takes a while to cool off especially if I put it on a charger.
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