All four of my Apple devices switched on the “install iOS updates” automatically when they were only ever set to download iOS but never install it.
I am still on iOS 13.7 for my iPhone 11 Pro Max, iPhone 7 Plus, iPad mini 5, and iPhone SE. I was waiting to update my primary iPhone with Apple Watch Series 5 until Apple fixes the bug with losing watch GPS data in activity app (for old data and new data) for many people. The only fix is to backup, wipe, and restore your devices. And there are other bugs I didn't want to deal with.
I also want all my devices to be on the same version of iOS, since often “continuity” and wifi calling on multiple devices breaks when devices are not on the same version. And many iOS updates give worse battery life for longer than just the first 2-3 days for spotlight to re-index files, and if this happens before a long trip it could be a real problem (like my 7 day trip to AZ last week). So I have to be careful to pick a safe time to update. I always manually back up to the computer and iCloud before I manually update, and since 2009 I have NEVER USED auto update.
Lastly, my iOS 13.7 has been pretty stable for me and I usually wait for at least the 3rd iOS revision before updating for the 1st time each year, or at least for the 1st update AFTER the new phones show up in stores.
Last night I took my dog outside, and while using my iPhone 11 Pro Max it gave me an alert that it would be installing iOS 14.1 sometime tonight! If not for my dog I would have awoken to the update being done. AND NO I'M NOT AN IDIOT AND I DID NOT RESPOND TO A REQUEST TO UPDATE BY ENTERING MY PIN to update later on any of the four devices. This was not my error.
I went through all four devices, one by one, to see that iOS automatic update was turned on, and I turned it off again! This feature has been off on all my devices, or they would’ve already been on iOS 14.01 or 14.1 already, not 13.7. By the time I got to my iPhone 7 Plus it was preparing to update, but had not started yet - so I turned off auto update and rebooted. After that I deleted the iOS update file and was still on 13.7. (I’d never reboot if the update was going on).
So, I was pretty ticked off. I have no idea what kind of bug would cause each and every one of my Apple devices to switch iOS auto update from OFF to ON with 4 different devices without my permission, when I didn't even bring the iPhone SE on my trip to AZ this past week. I can maybe see an update happening on just one device by accidentally typing my iOS device password during an update request, which tells it to do it later, but NO WAY did I go into settings on all four devices and change auto update to ON.
This AM I asked my wife to let me see her iPhone 8 and I told her about this bug. She said that her iPad mini 5 had auto updated last night, and I saw that her iPhone 8 was warning us that it was also going to update tonight! So this issue is not even tied to just devices on my Apple ID, but affected her as well.
I just checked her old iPhone 7 that I keep as a spare, and it was also in the process of updating, as was my deceased brother’s iPhone 7+ and my daughter's iPad Air 2 (I keep them charged in the desk). All of my wife's devices had previously been set to auto update OFF, but Apple remotely switched it to ON with all 3 of her devices somehow!
But my brother’s 7+ was saying “update requested” and yet auto update was clearly still off - not remotely switched on like ours. It was the same with my daughter’s iPad Air 2, which showed autoupdates off but “update requested” and it was downloading iOS 14.1. We have not touched my brother's 7+ or the iPad Air 2 in the 8 days we were gone in Arizona last week, until today to check this issue, so there was no way anyone could have unlocked the devices and approved the updates while autoupdate was off.
If you don't specifically DELETE the downloaded iOS update file in Settings > General > iPhone Storage then the device will try to install again later without your permission!
7 of 9 DEVICES on 4 different Apple ID had this happen at the same time, and 2 of the 9 on 2 different Apple ID were preparing to update with auto update still off! Has anyone else had this happen to them recently?