Though the product works in high performance, the battery was down with in six months. Power get drains very fast and once it drains, it wont get recharged with adapter and even with booster. After a week or two when power is above 50%, the phone get shut down automatically. While I am happy with the smartphone mobile experience the battery performance and sudden auto shutdown issues disappointed me very much. So you may ensure you have proper documentation in hand so that if this issue occurs you, may avail guarantee.