Android's app data usage is what tells me it was Firefox.
I probably overstated things with the word suddenly, but it was over the one day. And since I am on WiFi at home and at work, and it probably happened in one block of time (as WiFi data usage does not show a spike) I would have to conclude it happened within a 2 to 2.5-hour window. You do make a good point about the max rate, I've no clue what it is out there. I'll have to check if it can even possibly fit.
I was browsing over a solid half of that time, but no videos just furniture stores and some forum. And the battery did in fact drain quite fast even though I didn't think much of it on the moment. I was not throttled but just lost data access once my allowance was used up, because that's how it works on my pay as you go plan, I'm based in the UK. Of course it had to happen on day 1 of my monthly 🙃
Thanks a lot, I did not know about either. But yeah, short of having had logging set up ahead of time, it doesn't seem like I can get much more on the incident unfortunately.
Some more granularity in Android's data usage warnings, with maybe some sanity check presets (like a single app using up over 1gb in the same day or something) would be an easy and relatively painless way to avoid these, but I don't think there's anything more than the xgb over 30-day periods thing unfortunately.
Oh well. Hopefully it was a fluke. Day 1 of my monthly data allowance this happens, and my carrier are absolute dicks with their pricing for additional data. Ducks to be me
Firefox on Android suddenly ate 10GB of mobile data, can I find out how? ( fedia.io )
Just wondering if I can somehow track if all that data was used by a particular add-on or tab or what....