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How can I find why certain apps are draining my battery (when they are not in use)? (programming.dev)

submitted 9 months ago by menisadi@programming.dev to c/askandroid@lemdro.id

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My phone (Galaxy S22+, running OneUI 6.0) was inactive yesterday for 18 hours straight. On those hours the battery went from 60% to 25%. I checked and the main two causes were: 13.6% - Firefox 12.2% - Always on Display. The AOD I get, it was indeed on all this time. Altough it is a bit disapointing that it uses this much battery, it is still less than 1% per hour so I'll take it. I have not idea why Firefox was even on this list? What can it be? Why was it active? How can I check it?

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[–] remotelove@lemmy.ca 2 points 9 months ago (1 children)

Yeah, I was basically saying that it's normal. "Normal" is relative, so there is that.

I don't mean to sound pedantic, but I am just trying to cover all the nuances.

You are also thinking in raw percentages, which is confusing by its very nature. Generally, battery-app usage indicators measure from the last time they were fully charged so that will naturally skew what percentages actually mean.

If you use Firefox continuously and discharge the battery from 100% to 75%, Firefox will likely have used ~100% of the total power during that time. When the phone goes idle, the total battery usage percentage by Firefox will decline. So, if the phone is idle from 75% to 50%, Firefox now has only used 50% of the charge from 100% to 50% but still only 25% of the total charge. (I am just using percentages that are easy to calculate in by head, btw.)

When the phone is fully recharged again, the metrics should reset and percent usage indicators will fluctuate by future use.

[–] menisadi@programming.dev 2 points 9 months ago

Makes sens. But I'm looking for the data from one day alone and on this day the phone was idle the whole day (literally, I didn't touch it even once) and still Firefox is responsible for 13% of battery usage (I tried it again yesterday BTW and the stats are almost the same).