Ok, I’ve done some testing on my phone here since I’ve nearly run out of my 8 GB of data.
I saw that my two biggest data using apps were Podcasts and Safari, so I turned cellular data off for both of them.
I then turned off the cellular data on my iPhone and then reset my data statistics so everything was at zero.
I turned my data on for a few minutes at a time when I needed to use it and kept an eye on my cellular stats.
System services used 12MB, which makes sense because that covers my mail and calendar syncing. Uninstalled apps shot up to just over 50MBs. I didn’t uninstall any apps.
Today, I turned my cellular data on for about 10 minutes. In that time, uninstalled apps used over 20MBs, shooting up to 80 MBs
What is going on here?
I'm on iOS 13.3 on an iPhone XR.
Wifi assist is turned off.
I’m using Koodo in Canada.
Any ideas?