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Happens on all the iPhone 7 display models in store too. Pretty bad considering Apple has always had the upper hand in how smooth their UI is. Hopefully it's an easy iOS update.
 
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With my 6S on iOS 10, the closing animation was smooth and fast. I've noticed on my 7 that when I close an app, there is a slight stutter in the middle of the animation. Just wondering if it's just my phone or if others noticed. Thanks!
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Yeah mines exactly the same, it's really annoying and doesn't seem to be any way to get rid of it
 
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Reduced transparency fixes this for now I guess
You're right. I switched the transitions back on after installing the 10.0.2 update to see if the problem had been fixed but to no joy.

Yes, it's disappointing.
 
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Oh my gosh...Im so happy I am not the only one who noticed this. Apple needs to fix this because it bugs the hell out of me. I know its not that big of a deal, but it doesn't feel fluid and it makes the iPhone feel slow when apps look like they lag on closing. Its just annoying.
 
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I've noticed it, but it seems purposeful... like there is a little 'bounce" as it goes into multitasking.
I thought it was weird; the open apps seem to jitter down for a split second, then up. Kinda different... I very highly doubt it's an "accidental animation" though.... for whatever reason, they thought this would look cool or serve some function.
 
I think it has something to do with multitasking. Maybe someone on a 6s can compare. But it looks like the lag comes from the designers wanting the home button react instantly, but still give time for a second press. I remember before, that there was a delay when pressing the home button because it was waiting for a second press.

This new method makes the button press react immediately, but makes the animation slower.

This is why I think it's intentional. I highly doubt it has anything to do with performance.
 
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There are other hobbies, besides watching apps close and searching for perceived imperfections on your phone. This is actually a bit scary. I was at the airport yesterday with some time to kill. People watching and it struck me that everyone, but I mean 100% everyone was on their phones. Sitting, standing walking, all where staring at their phones. Started to think I was in some zombie apocalypse movie.

I am just as guilty as the next person who lives their lives on these little computers. But it hit me like a brick in the head realizing how addicted we have all become. Just a side note observation.

I suspect the closing animation is by design rather than an actual stutter. As it replicates consistently. turn on reduced transparency that seems to avoid that animation if it bothers anyone that much.
 
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I suspect the closing animation is by design rather than an actual stutter.

By design?

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LMFAO........THANKS
Any time! lol.

On a serious note (Samsung pun not intended), I have a 6s and my dad has the 7. The 7 stutters every time I use his phone. Looks like a software issue. I'm sure they'll fix it with an update. I noticed the glitch on the iPad Pro, as well.
 
I suspect Apple is having a similar issue to one Android OEMs having been having for a while now. With BIG.little CPU architecture (powerful cores for heavy loads and energy efficient cores for light loads), you have to switch back and forth between the powerful cores and the efficient cores and it takes some cycles for this handoff to occur. If the algorithms for switching between cores aren't perfectly tuned, you may occasionally see a little stutter when the CPU is switching from the high power cores down to the low power cores or vice versa. I could be completely wrong of course, but it wouldn't surprise me if that's what causing the little stutters here and there. It would make sense for Apple to switch to the low power cores when on the home screen because the home screen doesn't take much processing power to render, but maybe the CPU is switching to the low power cores before the animation finishes and that's what's causing the stutter when going to the home screen and in various other places. If that is the case, I'm sure it can be fixed in software, but it might take some time for Apple to perfect it since this type of CPU is new for them.
 
I suspect Apple is having a similar issue to one Android OEMs having been having for a while now. With BIG.little CPU architecture (powerful cores for heavy loads and energy efficient cores for light loads), you have to switch back and forth between the powerful cores and the efficient cores and it takes some cycles for this handoff to occur. If the algorithms for switching between cores aren't perfectly tuned, you may occasionally see a little stutter when the CPU is switching from the high power cores down to the low power cores or vice versa. I could be completely wrong of course, but it wouldn't surprise me if that's what causing the little stutters here and there. It would make sense for Apple to switch to the low power cores when on the home screen because the home screen doesn't take much processing power to render, but maybe the CPU is switching to the low power cores before the animation finishes and that's what's causing the stutter when going to the home screen and in various other places. If that is the case, I'm sure it can be fixed in software, but it might take some time for Apple to perfect it since this type of CPU is new for them.
Noticed this on an A9 based iPad Pro.
 
I was at the airport yesterday with some time to kill. People watching and it struck me that everyone, but I mean 100% everyone was on their phones. Sitting, standing walking, all where staring at their phones. Started to think I was in some zombie apocalypse movie.

To be fair, lots of people are probably traveling alone and are using their phones as a way to pass the time until their flight. Using the phone has replaced other activities like reading magazines in the terminal. This is okay.

I agree some people are glued to their phones 24/7, but most people are just using their phones during those times in life when they'd be bored with nothing else to do. One example in my case is waiting in queues. If I'm in a queue, I'll be on my phone because it's far better than staring into space.
 
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To be fair, lots of people are probably traveling alone and are using their phones as a way to pass the time until their flight. Using the phone has replaced other activities like reading magazines in the terminal. This is okay.

I agree some people are glued to their phones 24/7, but most people are just using their phones during those times in life when they'd be bored with nothing else to do. One example in my case is waiting in queues. If I'm in a queue, I'll be on my phone because it's far better than staring into space.
Not really saying it's wrong to be on the devices. Just that it struck me all of a sudden that everyone was. I literally mean everyone. Am sure people were contacting family and friends for pickup among other things.

I'm on my devices all the time as well, it was just an epiphany of sorts.
 
For the record, I filed a bug report at bugreport.apple.com. It's not just closing apps; I noticed that a few apps have scrolling performance issues, in particular Tweetbot, Yelp, Twitter, and the multitasking view too. All of this is silky smooth on the iPhone 6S.

I recommend anyone who is bothered by this issue file a bug report as well so it gets more attention. The phone really does perform extremely well otherwise and it's a bit irritating that it's got these issues.

On the other hand it's kind of expected. I don't think there's been a single glitch-free iPhone launch, ever.
 
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