I have an Lgg4 and I am on my second cable that this happned to. When I first get the cable it works fine and the phone is charging well and quick charge is activated. Then after a week, sometimes less, the quick charge notification dissapears, and the phone goes back to its usual poorly charging and quick battery draining state. I know its not the cords because my friends have the same cords but different phones and these cords last them a long time. I am so confused and hope theres an explination, because I'm tired of having to buy new cords and being afraid of breaking my friends cords when I borrow them.