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There are several apps in the Play Store that can list which applications use specific permissions. One that I use is Permission Friendly Apps by androidsoft.org https://play.google.com/store/apps/details?id=org.androidsoft.app.permission It requires no permissions itself so it's safe to use. Once you install it, you can look through the built in views ...


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It's the custom ROM but it may not be the ROM itself. Most of the times it is the kernel that comes with the ROM that is most influential. But, it is possible that the ROM has a feature or two that is draining the battery. Also, since it is an S4 I have to ask, is it a Samsung ROM or AOSP? Because AOSP is so much different that usually because it is not the ...


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Smartphones have a particular text file in which is contained the drain value... If you delete this file the device recreates it when it boots and the battery percentage may display a 50% to 70% difference. Chances are you use to charge your phone everytime you want without completing a full cycle of recharge once a month (at least). This way the phone ...


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I haven't heard about number of charge cycles affecting battery life. However... http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries dwelling in a full state-of-charge for an extended time can be more stressful than cycling. Most Li-ions are charged to 4.20V/cell and every reduction of 0.10V/cell is said to double ...


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All batteries have some recharging cycle. If you repeatedly use USB that means you are charging repeatedly. This reduces battery life by consuming recharge cycle early. And contrary to manufactures demand to have 50% battery for updating the software, you can updated it even with 5% if it lasts until your software update is complete. I've done it in my Sony ...


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Modern electronics will not overcharge battery, and phone should be able to handle being constantly plugged in. However keeping battery constantly in high state of charge and charge cycling in high voltage will increase battery degradation. It's best for battery when phone is minimal time in full charge. My personal experience is that my android phone SGS1 ...



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