mobile phone updates control/influence battery behavior?

in the note3, the battery was suddenly being drain fast quickly.. I thought perhaps the battery needs replacement.. then the default update and reboot seems to have fixed it.. how could code influence battery behavior? if yes, what other influences does a code update can have on a mobile phone?

thanks.
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25112Asked:
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viki2000Connect With a Mentor Commented:
Try to install a battery monitoring program:
https://play.google.com/store/search?q=battery&c=apps
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KimputerConnect With a Mentor Commented:
A phone is all about hardware and the OS (sofware). A bug for instance, could keep something running in the background, using precious CPU cycles, and hence drain the battery.
Influences are as many as your imagination can dream up (hardware allowing), as that's what coding is all bout.

Usually with battery drains though, it's not just the Android update, it could also be an app you downloaded and installed. If really bad, do a full reset (and don't install all the same apps again, only install the most important ones slowly. After it's stable, install the lesser needed apps, only one per day)
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25112Author Commented:
will follow your tips.thx.
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