Item delivered very quickly. My gsm held no longer than half a day even if I do not phoned. Considering the price of this battery, I told myself that I was not taking too many risks. And I was pleasantly surprised. I even feel that this battery stays charged longer than the original battery. Wifi on, 3g on continuously, regular use during the day, the battery is not discharged in the evening. I am delighted and I recommend this article.