Aside from the warranty, it appears to be a regular micro USB charger available anywhere at three for a buck. Why would you even bother calling them? If it supports the fast charge rate those are readily available, too. Buy a charger rated at 2 1 amps and you are good to go. Samsung phones DO NOT need Samsung chargers. The phone needs 5 volts from a charger that can supply enough current to charge it at the highest rate the phone can support. From phones to cars, companies make money telling you that you must use factory parts and accessories. There are companies selling billions in after market parts proving that to be not true. Every dollar store,supermarket,quick stop and flea market sells chargers,