Battery drain even worse than usual as of last friday.

Jan 16, 2013
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When I first bought my Samsung Galaxy S7 I would get through the day with 50% battery. Then after a few updates it dropped to 30% and now 10%? Friday I first noted the dramatic drop to 6%. What gives?

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I use the USA Today app a lot for news. So, I know why it is using battery. What is the deal with the OS and Stand-by using so much? I've tried restarting the phone last weekend and it has not helped.