Not true. If you plug an iPhone into a recent Mac that is powered on, the Mac will often deliver more current than the iPhone wall charger will output. As a tes

Not true. If you plug an iPhone into a recent Mac that is powered on, the Mac will often deliver more current than the iPhone wall charger will output. As a test, with my phone plugged into the computer, the Mac is delivering 2.1A over USB to the phone. Source: https://support.apple.com/en-us/HT204377 https://support.apple.com/en-us/HT204377