iPhone "Other" storage still present after Erase All Content and Settings Was hoping I could restore it to factory settings and recover some space. I just finished an ‘Erase All Content and Settings’ on my iPhone 6s 16GB. I have not signed into anything, installed any updates, or installed a single app. I did not restore from any backup (iCloud or iTunes). iOS 11.4

This is the storage as is stands after the reset:



How can I clear/recover the 4GB of "Other" storage being used? Is there a "deeper" wipe than ‘Erase All Content and Settings’ available?

Update: The device has been removed from our MDM program, reset and the storage still remains consumed. 

Update: 4 months later, it's gotten worse, the "other" usage has consumed over 10gb at this point. Just tried factory reset from itunes instead of the phone itself, did not free any up at all. Device not associated with the MDM program.
I understand you haven't installed a single app, but the list shows Self Service, the client side app to a mobile-device-management solution. This is not part of iOS and is a separately installed app. MDM lets the administrator place any files on your iPhone, so it is possible that the space is consumed by data provided through MDM. You can contact your administrator.