Following the slow load problem for my new Smartphone, search the net allowed me to locate the cause: the old generation USB cables: for reasons of power, often they are not adapted to the load of the latest generation of smartphones. This PORTAPOW 30cm cable is recommended by heavy users. Indeed my phone much faster load, at least 2x faster, thanks to this new cable, and no need to replace the charger! ATTENTION: This cable is short 30 cm, it can be used to power the Samrtphone attached to the windshield of the car;! why take its big brother the PortaPow - High Speed 100cm 20AWG Excellent cable, I recommend!