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This is likely a hardware problem. Check your connection, if not power circuit...


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When you restart your Android phone, it uses more energy than when it's idle because it has to load up the JVM, the services, apps etc yet again. I'm not sure why you saw an 80% battery decrease, but it might be due to the phone losing energy by heat when you're charging, and the phone somehow registering the real battery value on a clean restart.


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If you're rooted, try Greenify. It will hibernate all the unused apps and thereby releasing resources which sucks up your battery juice.


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Try the extra battery when you get it but in the meantime look up how to calibrate your battery with or without root (depending on your setup (if you don't know what root is you probably don't have it and it's probably not worth messing around with) . There is an app on the play store called battery calibration pro that should work without root. Also try ...


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Try factory resetting the phone. (Ignore if already tried) Another thing you might do is calibrate the battery. Drain out all the battery till 1% is left and put it on d original Samsung charger. Let it charge fully. Do not interrupt it while in charge. In this way the battery will calibrate itself. My personal experience shows battery monitoring apps drain ...


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I had the same problem. After turning off the network time, I set it back manually and then it didn't turn on the screen at midnight.


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especially on a rapid-charger, this is normal charging behavior to achieve complete 'depth' of charge. I wish they wouldn't report it as "charged/100%" if it was still trickling. Here is a graph of the charge curve. note the voltage on the battery tops out but the current is still drawn. It's somewhat an EE question, but higher voltage is provided to the ...


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BBS is more confusing than GSAM battery companion. It provides more detail, but GSAM + root can tell you a lot. If you could provide screenshots of full charge, to fully dead we can point you in right direction; if this happens in 7 hours with the screen off and no interaction all the better it should be very trivial to find. From there, you could use ...


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It would be preferred to restart the device, but before you do that, try clearing the ram and recent applications ALL THE TIME. If this fails, try battery doctor. It is a very useful tool that closes background apps and things you are not using.


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Never let it run down below 10% if you can help it. Running down to "absolute zero" harms your battery (and might even render it inoperable – which is why most devices shut-down before reaching that point). Modern LiIo batteries don't suffer from "memory effect", so ideally you'd plug-in a charger whenever possible: "trickle-charging" doesn't hurt them, low ...



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