One of my problems with this theory (though totally valid) is that I shouldn’t have to do this every time an update freaking comes out. For the sake of making sure my issues haven’t been app related I will try this, but this is totally crazy to have to do considering literally everything has been the same since iOS 10.3.3.
The only culprit I MAY suspect is YouTube, but again, that never caused this bad a drain on 10.3.3...
My personal theory is that, especially with the jettisoning of 32-bit support (as well as the parts of the OS that were 32-bit), that anyone who upgraded to iOS 11, let alone those that did so with 32-bit apps still installed, faced a whole host of issues (battery drain, more sluggishness than is usual for a new and upgraded-to whole version of iOS), whereas those that did clean installs and then re-downloaded their apps afresh from the App store, probably didn't have many of the issues. If my theory is correct, then Apple, being a marketing/PR-focused company would have no way to disclose that, with this release and unlike any release previous, people need to do DFU restores to experience iOS 11.x without issue, without shooting themselves epically in the foot.
This would explain why the iPhone 8, 8 Plus, and X don't have these issues. I'd be curious to see if any still-sold older iOS device (iPhone SE, 6s, 6s Plus, 7, 7 Plus; iPad 5th Gen, iPad mini 4, either size of iPad Pro; 6th Gen iPod touch) that comes with iOS 11.x.x preloaded also doesn't have these issues, as it would probably further lend credence to my theory.
Upgrading whole version number versions of iOS has never been pretty; I never do it because the results are almost always slower than doing a DFU restore and then manually reloading apps and data (which 95% of apps and services will accommodate just fine). And, I completely agree with you; it SHOULDN'T be that way.
Another day, another bizarre skewed poll in the MR forums.
The poll is to start a discussion to potentially figure out a commonality to the issues. Apple is not going to be open about these issues and how widespread they are, so we might as well help each other figure out what's going on and how to maneuver around it. Because they certainly aren't helping us.
So far battery is better for me after restoring as new. I have installed 2 “must have” apps (GroupMe and Planning Center Services) so the battery drain wasn’t those apps.
I will restore my backup and see if the battery life is the same as it is now (which I would be very happy with). I pray it does because so far I am very happy.
This screenshot is my SE with only 2 apps like I said and I JUST turned background app refresh to WiFi only before taking that picture so it may have been even better like 10.3.3 before changing that setting.
EDIT: Definitely better, maybe even better than 10.3.3 somehow. I am at 79% with 2 hrs 25 mins usage. At this rate I’ll definitely hit 4 hours at 50% like I used to. Now to find the all that was the culprit...
This is after your restore? Or is this still with your clean wipe and install?
Just restored my backup from the beta 5 (same build as the official). Will see if battery remains good after I unplug, will update with results. If battery is back to bad, I'll have to restore as new again and find the culprit one app at a time....
Sigh...this is so tedious and shouldn't have to be done....
You won't find an argument there. Like I said, if the jettisoning of 32-bit support (and then subsequent upgrades) are the cause of this, then it's a real problem that is (a) likely to be specific to this particular iOS upgrade and (b) likely something Apple will never come fully clean about because it would cause insane amounts of justified backlash.
Unfortunately 11.1 did not help battery life for me. When I originally contacted Apple Support about it on 11.0.x, they said reset to factory defaults, do not restore the backup (i.e. run with only the default Apple apps), and without any contacts or pictures. Try it for 3 days and see if it helps. Yeah I'm pretty sure if I don't use any apps or call anyone my battery may last longer. Sigh. Disappointing.
Again, the issue might be backups from setups that predated iOS 11. Or said setups themselves. If you try setting up everything as though your device came with 11 preloaded and everything is fine, then it's not the OS that's the problem but, rather, the upgrade process to it. Either way, it's still extremely bad form for Apple.