I have been using it for a week or so now.. I also have a couple of apps that help with battery life. But so far I its been a little better. I know its not worth the 30 I paid for it. Im a very heavy user on it so, my phone dies a lot so I have a charger with me in the car and at home. I know that there are some other battery that are better that I was going to try. But as of right now I would say no don't buy it, in less you aren't a very heavy user then it would help you out a lot.