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I have a Samsung Galaxy S6, Stock ROM, running Android 5.1.1.

Last night, as I was browsing on my phone before I fell asleep, my battery dropped from 19% to 15% in an instant, engaging power save mode. It was concerning that the battery dropped like that, but I didn't think much of it. When I woke up this morning, I was using it again, starting at 9%. It then dropped instantly to 5%, engaging the Ultra power save.

I have never had my battery drop like this. I purchased the phone in November of 2015.

Attached are two screenshots, one from the Battery menu, and another from GSAM Battery Monitor.

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Upon looking further at the stock settings graph, it seems to be dropping at other times too. Is this a sign of a failing battery? Should I bring the device in to my carrier for service?

Thank you!

  • Sudden percentage drop of the kind you mentioned (apart from other drops which could be wake lock related ) is a reason for concern. Your battery can't or shouldn't fail in 6 months even if you a real heavy user. Since you are covered by warranty, best to get it checked and seek replacement – beeshyams Apr 4 '16 at 7:49
  • I don't have wake lock information, as my device is not rooted. The battery did drop again, without my noticing, last night. I suspect that the Tumblr application may be responsible, so I am testing a full charge without running the application. – Kaizerwolf Apr 4 '16 at 22:54
  • Ideally test out in safe mode-installed apps are not acTive in that mode – beeshyams Apr 5 '16 at 2:03

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