I don't understand this at all. I have Bixby routines set so that my mobile data is actually OFF when I'm in wifi. Not that wifi is PREFERRED, that mobile is actually OFF. So I get a notice to update system on my Note10. Hit ok bc well, the mobile data IS turned off. and it downloaded over mobile anyway bc I just got a notice for my data usage. How the heck is that even possible? Look at my phone and my mobile data is now on, while I am in my wifi zone at home...how? Data saver is also on btw. I also have the update via wifi only option checked in the google store since people here are recommending that even though I don't think it has anything to do with system updates. Oh...AND I have auto download over wifi selected under software update in settings.