Are the multivoltage smarts in the phone or in the USB-A charging brick? In my wall wort box were a dozen USB charging bricks. Removing the duplicates, the varying voltages & current outputs were
4.6-5.3V@0.5A (duracell)
5.0V@.85A (doncdo)
5.1V@0.7A (lg)
5.1V@2.1A (newtrent rohs)
5.2V@2.4A (apple)
9.0V@1.8A & 5.0V@1.8A (lg)
9.0V@1.67A & 5.0V@2.0A (samsung)
12V@1.5A & 9V@2.0A & 5V@3.0A (motorola)
For the multivoltage bricks are they phone specific? Are they phone model specific?
Or can any recent phone use any of the multiple voltages? Especially the 12V and 9V multivoltage bricks.
Are the smarts in the phone to be able to use any multivoltage brick? Or in the brick?