To be honest, I thought this product was an OEM. I also thought it was a standard battery. When I saw no logo, I was a little disappointed. However, I noticed right away that the profile was higher than the original battery. At that point, I installed the new battery, in the phone, and went through the first use charging procedure. So far, after 3 weeks of use, each battery charge lasts a week. This is a far sight better than it's previous battery.