My Galaxy S3 is barely a month old. It used to have excellent battery life. Now, It's terrible! I have to charge it at least 3 times a day if I have minimal use on it. I never play games because it dies so fast. I uploaded a screenshot of my battery usage screen. It had been on stand by for most of that time and was still on 88 percent. If you do the math, it wont last very long at that rate. Thanks in advance.