Native Email App - Sync/Fetch Issue - iOS 18
Upgraded my Iphone from iOS 17 to iOS 18. Native mail app was working fine under 17 but since updating to 18, there seems to be an issue with the fetching of emails. I have several emails setup with the native Mail app (yahoo email, gmail email, another AT&T email that utilizes yahoo) and it seems to be affecting them all, most definitely the yahoo based emails.
In a nutshell, I have no issues sending emails real time. If I access the Mail app, it will sync and receive any new emails. It's basically acting like I have Fetch setup for manual receipt versus automatic or at intervals. If I am not actively in the Mail app, it doesn't attempt to sync automatically under normal use.
Example, I could not have picked up my phone for 30 minutes to an hour and when I unlock the phone, the mail apps "App Badge" will still show the same number of unread emails as when I locked it. However, if I open the mail app, new emails will drop in. There are also times where the "App Badge" might actually show more unread emails compared to when I locked the phone, but when I open the app, none of the new emails have actually downloaded, only the notification indicating that the app at least detected more were out there.
I have deleted the accounts and re-added them with no change. I have adjusted the fetch settings with no change.
The one thing I have found that seems odd, and I don't know if the phone is just trying to do something weird with power consumption in attempts to maintain better battery life or if it's just a weird coincidence, but I have found that anytime my phone is on a charger (could be a cable charger, wireless charger, etc.), the mail app not only sees the emails but downloads them real time like it did in iOS 17. As soon as I remove the charging from the phone, it goes back to not fetching real time anymore.
I did report this via Apple's feedback system, but that was before I discovered the charging aspect to this equation. Figured I would post as an FYI to something I have found with my sync issues in case it helps in their troubleshooting as I don't expect many to have an actual resolution to some of these sync issues at this time.
iPhone 14 Pro Max