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My iPhone 11 Pro is 50% slower after I updated to iOS 14.5.1

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Re: My iPhone 11 Pro is 50% slower after I updated to iOS 14.5.1

#31
post #13

Earlier quoted context omitted.

Kind of sad that we don't have a top or process viewer. Or free -m / open system. This makes me yearn for an open source OS on my phone again, I may have to look into a pine phone.

I agree, but it shouldn't be a classic process viewer. It should be a task viewer which has some context or understandable description. Like "photo analysis job" or "iOS 14.5.1 data migration job".

[deleted]

Re: My iPhone 11 Pro is 50% slower after I updated to iOS 14.5.1

#32
post #20

Earlier quoted context omitted.

Well I've been developing iOS apps for a long time, and updated many times. I don't remember anything as dramatic as this!

Hmm, if I specifically go looking for reports of benchmarks going down, it does seem to be a much more prevalent story with this version than any previous one.

Yes. The slow down was real and very significant and it lasted hours. It was not people freaking out for no reason.

Re: My iPhone 11 Pro is 50% slower after I updated to iOS 14.5.1

#33
post #14

Earlier quoted context omitted.

Every time there’s an iOS update, the internet goes crazy about their phone being slow or hot or not holding a charge. Then, a day or two later, the background system processes finish doing their post-upgrade homework and everything goes back to normal.

To be fair, iOS maybe should put some visual indicator that it is doing this. Then everything would be obvious.

While this might be appreciated by a small number technical people it would just be confusing to the overwhelming majority. The cell, wifi, and battery indicators all provide information the user can affect by moving the device or plugging it in. An indicator would not provide any actionable information to the user. Also progress bars and time estimates for tasks are typically expected but in practice very difficult to make accurate. So you could not even accurately tell the user how long they need to wait for the device to finish it's background work

Re: My iPhone 11 Pro is 50% slower after I updated to iOS 14.5.1

#34
post #28
post #14

Earlier quoted context omitted.

Every time there’s an iOS update, the internet goes crazy about their phone being slow or hot or not holding a charge. Then, a day or two later, the background system processes finish doing their post-upgrade homework and everything goes back to normal.

If your update system requires 1-2 days of "post-upgrade homeswork" time and slows your phone by 50% in the process, you've designed a very poor update system.

Why? Seems like this just ignores reality.

It’s just true that data structures change over time, and sometimes new features mean that old data needs to be re-processed.

Re: My iPhone 11 Pro is 50% slower after I updated to iOS 14.5.1

#35
post #20

Earlier quoted context omitted.

Hmm, if I specifically go looking for reports of benchmarks going down, it does seem to be a much more prevalent story with this version than any previous one.

Yes. The slow down was real and very significant and it lasted hours. It was not people freaking out for no reason.

Reports of post-upgrade slowdown are pretty common (google it for various versions), but this is the first time I’m seeing lots of reports of post-upgrade benchmark hits.

Re: My iPhone 11 Pro is 50% slower after I updated to iOS 14.5.1

#36
post #25

Earlier quoted context omitted.

"Background system processes running" wouldn't be obvious to non-technical users. It might even be distressing. If the process isn't something that can easily be explained to a regular user, I can see why Apple wouldn't try and communicate about it. Though I could see maybe detecting that a user is a developer and showing a message only for those users

True, but it could be marketed a bit better: "Update finishing in the background"

People hate updates, it would make them more aware they are happening.

Re: My iPhone 11 Pro is 50% slower after I updated to iOS 14.5.1

#37
post #25

Earlier quoted context omitted.

"Background system processes running" wouldn't be obvious to non-technical users. It might even be distressing. If the process isn't something that can easily be explained to a regular user, I can see why Apple wouldn't try and communicate about it. Though I could see maybe detecting that a user is a developer and showing a message only for those users

True, but it could be marketed a bit better: "Update finishing in the background"

This is how Android shows it, and I think it is quite good because the phone feels slower while finishing the upgrade.

Re: My iPhone 11 Pro is 50% slower after I updated to iOS 14.5.1

#38
post #33

Earlier quoted context omitted.

To be fair, iOS maybe should put some visual indicator that it is doing this. Then everything would be obvious.

While this might be appreciated by a small number technical people it would just be confusing to the overwhelming majority. The cell, wifi, and battery indicators all provide information the user can affect by moving the device or plugging it in. An indicator would not provide any actionable information to the user. Also progress bars and time estimates for tasks are typically expected but in practice very difficult…

I don't see why they shouldn't include this when they include the info when it happens for a mac. When you get a new mac or it updates, you can see that spotlight is busy reindexing which explains the slowdown. I'm surprised there is not some one sentance explanation somewhere in the phone, like "processes will continue to update in the background and phone performance may be affected until this finishes" and boom, the OP article would have never been written.

Re: My iPhone 11 Pro is 50% slower after I updated to iOS 14.5.1

#39
post #19

In case anyone missed it, the author of the submission added an update [1] saying that after some time the issue went away: > Aaaand it's fixed... I didn't do anything specific. It took a few hours (?!) after the upgrade. It scored many times low, but now it seems to score at a normal level (3000+). Really wonder what the explanation for all of that is. [1]: https://news.ycombinator.com/item?id=27131683 .

Does iOS do the same post-install spotlight indexing as macOS? That’s often the culprit for post-upgrade slowdowns on Macs.

Re: My iPhone 11 Pro is 50% slower after I updated to iOS 14.5.1

#40

My FaceID stopped working. I cannot %100 relate it to the update itself, but after the update, I also enabled the unlock with watch, after one day, I decided it it not for me and disabled it. After that my FaceID entirely stopped working. I have removed face id to add it again, but cannot add it back, it keeps saying "move iphone a little lower". Tried everything short of resetting to factory defaults and nothing has…

maybe FaceID is trying to get a little frisky...
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