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oryan_dunn

macrumors member
Original poster
Dec 4, 2020
87
62
When viewing the battery stats for the "Last 24 Hours", you can see when the phone was on the charger, and click on those times it's on the charger to see screen on/off time and app usage when connected to the charger. However, when you select a single day on the "Last 10 Days" section, you only see a percent of battery used. Do the screen on/off and app stats only report for the times the phone was off the charger in this view?

If it counts all data during the day, even when it's plugged in, then the stats would be worthless, as you could have used it 100% of the time while it's on the charger, then unplug it, and you'd have wildly skewed results.
 
I will need to do some deliberate testing, but anecdotally I think the day selection in the last 10 days view does count time on the charger. Which… is really disappointing.
 
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Well, these screenshots don‘t paint a good picture… just about an hour was on the charger, yet the 24hr page reports the same stats as the last 24hrs where you can see when it was on the charger.
1BECDA22-24D3-422D-898F-D0A2D85AC1C2.jpeg

90B779D7-2A1E-4D95-9F99-8892A29A8E59.jpeg
 
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I find the 24 hour battery usage chart useful for 2 things. The first being to know when an app was running and for how long. And the other, I just manually add up the individual bars after the battery charge to get my battery life off the charger.

The screen-on and screen-off times include time on the charger. So for battery life they aren’t very useful IMO. This is the same for the 10 day battery usage.
 
Things I think they should do to make this screen more useful:
* Add a third tab, which is the stats since you took it off the charger (so you and everyone else doesn't have to try to click each hour and manually add everything up)
* Allow the user to toggle including the time on the charger in the stats for a page

Those two changes would make this much more useful, but much more transparent, so it'd be harder for Apple to hide bad battery life.
 
Things I think they should do to make this screen more useful:
* Add a third tab, which is the stats since you took it off the charger (so you and everyone else doesn't have to try to click each hour and manually add everything up)
* Allow the user to toggle including the time on the charger in the stats for a page

Those two changes would make this much more useful, but much more transparent, so it'd be harder for Apple to hide bad battery life.
Leave feedback at Apple Feedback. I did this a few days ago,
 
When viewing the battery stats for the "Last 24 Hours", you can see when the phone was on the charger, and click on those times it's on the charger to see screen on/off time and app usage when connected to the charger. However, when you select a single day on the "Last 10 Days" section, you only see a percent of battery used. Do the screen on/off and app stats only report for the times the phone was off the charger in this view?

If it counts all data during the day, even when it's plugged in, then the stats would be worthless, as you could have used it 100% of the time while it's on the charger, then unplug it, and you'd have wildly skewed results.

It’s not that worthless. You can always subtract the number of mins/hours worth of usage shown in the last 24 hours graph, from the daily graph.

Plus you can easily look for rogue apps or apps with unintended background activity that have been “rolled off” from the 24 hours graph. It’s a useful tool but you just need to know what to look out for.
 
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