I ordered two batteries, one for my husband's phone and one for mine. After a few weeks we noticed that one held a charge for less time than the one it replaced, while the other functioned for much longer. And, when it is about half charged the phone shuts off if any power demand is put upon it. Upon review of the faulty battery we found scratches on it and assume we were sent a refurbished/used battery even though the product description said new.