I'm trying to check my historical data usage on my OnePlus 6 (OxygenOS 9.0.6).
I used to be able to go to the Data Usage settings and use a drop-down list at the top to select different time periods, but trying this just now it only shows me the usage since the start of my current billing cycle, with no option to show any other period.
This is not the behaviour I was expecting, so I wonder if this specific to Android Pie on my OnePlus 7, or has Android Pie (or earlier) removed the ability to display data usage history.
Noticing that my billing cycle start date was wrong, I corrected it and found that the usage data shown now goes back to the start of the new billing cycle start date, so obviously it stores more data than is displays.
If more history is still recorded somewhere, how can I get access to it, and how far back would the history go? I'm comfortable with using
adb if necessary.
My device is not rooted, nor can it be, but I'm comfortable with using ADB if necessary.