Fetch New Data “?” Unknown Question Mark Account
I found that my battery was draining with the iOS Mail app being used in the background (for example the entire time it was charging overnight, and it never fully charged) and significant WiFi data was being used when connected to WiFi.
I found that under Passwords & Accounts > Fetch New Data there was an account listed with just “?” for the name (just the question mark symbol). Under it in grey was “Mail, Contacts, Calendars, Notes” and setting was Fetch.
Under accounts, this “?” was not listed, just my “iCloud” account. The “?” account only showed up under Fetch section. There were no Profiles on the phone. The Mail app was not part of my iCloud backup. I was not logged in to an email account for the Mail iOS app.
Has anyone seen this before or know what causes it? I have seen a few other posts online about it over the years but there does not seem to be an explanation.
I tried erase and restore with two different backups (including one from a a few weeks back). Still showed up. Still kept using battery and data. Only way the “?” account under Fetch New Data went away was setting up as new phone.
using iPhone 11 with up to date iOS.
Appreciate any help or insight as to potential causes.
iPhone X
