if any of Galaxy s 3 , note 1, note 2 owner experiencing very slow or no charging , check with another usb cable , i recently bought a 2nd hand note 2 and it was very slow charging , for my pleasure it was under warranty still and , usb cable was changed at service center and now the trouble seems to be over , there is an app on play store by name of " galaxy charging current lite " it will tell you the incoming current into phone , for my new (2nd hand) note 2 it should be around 1500-1800 (on avg reading of app only) , but it was as low as 100-300 most of the time , so that was the issue , now its charging at 1700-1800 power
eaceful:
https://play.google.com/store/apps/details?id=com.abmantis.galaxychargingcurrent.free&feature=search_result#?t=W251bGwsMSwyLDEsImNvbS5hYm1hbnRpcy5nYWxheHljaGFyZ2luZ2N1cnJlbnQuZnJlZSJd
https://play.google.com/store/apps/details?id=com.abmantis.galaxychargingcurrent.free&feature=search_result#?t=W251bGwsMSwyLDEsImNvbS5hYm1hbnRpcy5nYWxheHljaGFyZ2luZ2N1cnJlbnQuZnJlZSJd