I bought a Pictek fast-charger a week ago (single round plate). Does work. But, unlike the "fast-charing Samsung branded plug/USB-C cable" there is no readout on the screen to say it's charging nor on the cover of my Samsung LED case. Why? Does the cheap Samsung branded supplied "fast-charging plug" put out more power? I know the Samsung Duo Charger will give a readout on the phone screen and likely on a Samsung LED case. What is it about Samsung branded products that make them work as they should with Samsung phones like my Note 9?