With the old battery, the mobile phone needed to be charged twice a day with heavy use, and with the new one, without use, it drops to 30% in three hours. I have ordered a new one and until then I will put the old one back. Also, I have to say that the cover, because it is made of glass, comes off very difficultly and I broke it even though I had the proper tools to open it. I advise you to order the battery and the cover together.