I've looked through as many charging threads as I could find. When you short the data pins (that's the 2 center pins, right?) The Note 3 knows it's a higher amp charging rate but how does it know if it's a 0.9 USB 3 port or a 2 A wall charger? Thanks. I'm trying to get a 4 A capable USB solar charger to provide the 2 A charging rate.