I have yet to see where the charging currents differ from usb 3.0 and 2.0
I plugged into a usb2.0 port and see 450mA current with Galaxy Charging Current app. Even when plugged into a usb3.0 port and selecting the usb3.0 in usb options on the phone it still charges with the same 450mA current.....
I don't have the wall charger with me but as far as I can see I'm not getting any difference in charging current...
With original plug and cable 2.0 supplied with s4, charges as fast as usb cable 3.0 that came with s5, at 1800 ma. No other usb 2.0 cables purchased come anywhere close.
PS. The only other micro usb 2.0 cable that I have also charges at 1800 ma is blackberry rapid charger (undetachable usb cable from the plugn, 6 feet long, 5v and 1.8amp output)
Spot on. Unfortunately some people on here don't understand that the quality and gauge of cables make the world of difference irrespective of the usb version. Some usb2 cables will perform better than usb3 cables and vice versa, completely depends on the gauge and quality of the cable itself, not the actual usb connection type.
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