Question: Documents & Sync High Data Use Despite Turning Off iCloud Sync & Using Low Data Mode
iPhone 8 Plus, iOS 13.2.3
I first uncovered this issue two weeks ago when I was notified that I'd used 90% of my data for the month. Self-diagnosed iCloud sync issues as Documents & Sync had used up 5 GB of data in ~1 week. Here is what I did initially to troubleshoot the problem:
- Logged out, then back into iCloud, while on Wifi
- Turned on Low Data Mode
- Toggled iCloud Drive to "Off" under the Cellular menu
- Turned Photos to "Off" under the Cellular menu
- Turned off "Wifi Assist"
- Cleared my "Cellular Data" settings so I could more accurately track data usage
Since Sunday, 11/24, I've used 583 MB of data. Roughly half of that was through normal usage- Google Maps, ESPN Fantasy Football, Amazon, Twitter, Chrome. 280 MB was used by System Services with 234 MB of that for Documents & Sync. More specifically, between yesterday morning and this morning System Services has used 220 MB of data, almost entirely for Documents & Sync.
I am trying to figure out what is still causing the high data usage in Documents & Sync despite turning off the usual high users of cell data. During this period the only time I was not connected to Wifi was the 15 minute drive to my in-law's house for Thanksgiving or the 15 minute drive back to my home afterwards. Outside of that, the only other time I was not connected to Wifi was during a ~1 hour walk I took last night. I tracked the walk using the Workout app on my watch (Series 3, NO cellular) and I listened to a podcast I had already downloaded to the phone using Overcast. I believe workout tracking would have shown up under "Time & Location" and probably "Mapping," not "Documents & Sync." If the podcast had streamed for some reason, I would think it would have shown up under Overcast.
Outside of that, I'm kind of at a loss as to what could have caused this amount of data usage in a 24 hour period when I'm actively trying to slow data usage and spent most of that time on WiFi. Any ideas/suggestions? Thanks!
iPhone 8 Plus, iOS 12