I ordered this battery, since I'm used to rely on a powerful smartphone. After ordering, it took less than 24 hours until delivery. I have downloaded and used the battery immediately. The rear wall described by many as too unstable in the stiffness approximately equal to that of the original and can not be distinguished under normal use. The battery delivers what it promises and saves me the constant charging in the car. From me there for the item and the seller, a clear 5 ***** recommendation! Price and achievement are correct!