commissioned to help the low battery "is a good word" of my iphone4s, I ordered this article. Order received quickly .this al appearance of a phone battery shell a bit thick, but unobtrusive. She barely notices. That does not make miracles, but at least we can enjoy the phone for a day. Certainly it does not make such a new, but at least there has not been going to a shop réparation.C'est my sister ordered me this article and I am very satisfied. I recommend it.