iOS 15 makes iPhone XS feel overall sluggish

[FILIPSN007]

I’d rather just pay for updates for older devices, instead of having the software slow the device to the point where you’re forced to buy a new one.

Something else interesting I’ve noticed on my stuttery iPhone is where you find a website with a series of pictures you can scroll through, if you ‘swipe’ to scroll to the next image the next image stutters and judders onto the screen, but if you click the arrow icon on the site, the next image perfectly smoothly slides onto the screen.

So the swipe action obviously uses the UI code with the planned obsolescence sub routine activated, but using the websites arrow icon actions this via separate code so it’s totally smooth and skips the deliberately slowed UI code.

Sounds like problem which has Samsung with adaptive refresh rate. When you lift up your finger refresh rate slowed down and animations are choppy.

More than 10 users reported via Feedback app problem that adaptive refresh rate also affects odler iPhones with 60hz displays.

https://us.community.samsung.com/t5...-scrolling-lag-in-stable-release/td-p/2099546

 

[jonobin]

I think that adaptive refresh rate affects even MacOS 12, scrolling is crappy on 60Hz displays

 

[Jupiter9]

10 year old dinosaur Intel i5 2500K still runs the latest games just fine but a 2 year Apple CPU made with the most modern technology struggles with animations in mobile OS.. yeah right.

 

[Taz Mangus]

More than 10 users reported via Feedback app problem that adaptive refresh rate also affects odler iPhones with 60hz displays.

I think that adaptive refresh rate affects even MacOS 12, scrolling is crappy on 60Hz displays

The only iPhones that have adaptive refresh rate is the 13 Pro and 13 Pro Max. The other iPhones with 60 Hz displays do not have adaptive refresh rate.

 

[FILIPSN007]

The only iPhones that have adaptive refresh rate is the 13 Pro and 13 Pro Max. The other iPhones with 60 Hz displays do not have adaptive refresh rate.

Adaptive refresh rate is a software feature not hardware. What if this feature is turned on even on older iPhones?

Look here how messy is adaptive refresh rate on iPhone 13.

 

[Taz Mangus]

Adaptive refresh rate is a software feature not hardware. What if this feature is turned on even on older iPhones?

It is only available on the iPhone 13 Pro and 13 Pro Max. Yes, it is software called ProMotion. It is only available on iPhones with an LTPO display.

 

[Taz Mangus]

Adaptive refresh rate is a software feature not hardware. What if this feature is turned on even on older iPhones?

Look here how messy is adaptive refresh rate on iPhone 13.

The iPhone is probably using a more aggressive ProMotion due to its smaller battery vs the iPad which has a much larger battery. In that video they are using an iPhone 13 Pro Max, not a regular iPhone 13.

 

[FILIPSN007]

It is only available on the iPhone 13 Pro and 13 Pro Max. Yes, it is software called ProMotion. It is only available on iPhones with an LTPO display.

ProMotion and adaptive refresh rate are two different things. ProMotions is also on iPad Pro and it means 120hz nothing else.

What would the animations look like if they weren't tweaked for adaptive refresh rate? and on the other hand what the animations would look like on stable 60hz? I think the answer is laggy animation because they are below 60hz.

On older iPhones you have software but no hardware. It's a same animation core for every iOS device.

 

[Taz Mangus]

ProMotion and adaptive refresh rate are two different things. ProMotions is also on iPad Pro and it means 120hz nothing else.

What would the animations look like if they weren't tweaked for adaptive refresh rate? and on the other hand what the animations would look like on stable 60hz? I think the answer is laggy animation because they are below 60hz.

On older iPhones you have software but no hardware. It's a same animation core for every iOS device.

From the linked article below. This is quoted from Apple:
The stunning, redesigned Retina display in iPad Pro features ProMotion, a new technology that delivers refresh rates of up to 120Hz for fluid scrolling, greater responsiveness and smoother motion content. ProMotion also improves display quality and reduces power consumption by automatically adjusting the display refresh rate to match the movement of the content.

What is Apple ProMotion? Apple’s screen technology explained

What is the Apple ProMotion technology and why is it beneficial? Read on to learn more and see which devices are equipped with the technology.

www.trustedreviews.com

 

[FILIPSN007]

From the linked article below. This is quoted from Apple:
The stunning, redesigned Retina display in iPad Pro features ProMotion, a new technology that delivers refresh rates of up to 120Hz for fluid scrolling, greater responsiveness and smoother motion content. ProMotion also improves display quality and reduces power consumption by automatically adjusting the display refresh rate to match the movement of the content.

What is Apple ProMotion? Apple’s screen technology explained

What is the Apple ProMotion technology and why is it beneficial? Read on to learn more and see which devices are equipped with the technology.

www.trustedreviews.com

Sorry but these marketing ********s do not describe how it actually works.
The stunning, redesigned Retina display ... I am laughting. 🤣

You have 120hz monitor and you pushing video with frame drop into it. That's how magical ProMotion is working. Two seperate things ... display and content.

 

[Taz Mangus]

Sorry but these marketing ********s do not describe how it actually works.
The stunning, redesigned Retina display ... I am laughting. 🤣

You have 120hz monitor and you pushing video with frame drop into it. That's how magical ProMotion is working. Two seperate things ... display and content.

Regardless ProMotion is Apple's system for adaptive refresh rate on a 120Hz LTPO display. You could have easily researched it, you just sounded ignorant about it.

 

[jonobin]

If they have the same algorithm for ProMotion on both iOS and MacOS, which they have, it's not strange to have the same issues on both platforms

 

[FILIPSN007]

Regardless ProMotion is Apple's system for adaptive refresh rate on a 120Hz LTPO display. You could have easily researched it, you just sounded ignorant about it.

I am not a blindness sheep. The word ProMotion does not describe how technology works. It's a marketing turnover.

 

[Taz Mangus]

I am not blindness sheep. The word ProMotion does not describe how technology works. It's a marketing turnover.

You jump to "I am not blindness sheep" because you don't like the term ProMotion. Of course it is marketing. So what, it is a way to express the technology. Every company does that. It is also part of branding.

Pretty funny how you were arguing with me, telling me you know what ProMotion is. You could have done an internet search and understood what ProMotion means, in the matter of 5 minutes.

Amazing. Every word of what you just said was wrong.

 

[FILIPSN007]

So what, it is a way to express the technology. Every company does that. It is also part of branding.

Best way is analyze it and understand it. I am trying to describe it because the word ProMotion is inaccurate.

There are two parts of the ProMotion system. (This is the way how I thinking.)

1. Software which pushing video signal to the display.

• Smooth video begins with 24 frames per second.

2. Display it self like HW part.

• Older iPhones have 60Hz display.
• Newer one with Promotion 120Hz LTPO.

If you want use maximum of the second part of the system you have to built video signal with the corresponding frames per second. (part one of the system)

For the best smoothnes:
60 FPS video signal / 60Hz display.
120 FPS video signal / 120Hz display.

Each frame is one hertz.

Adaptive refresh rate with iPhone 13 looks like this:
120 FPS video signal / 120Hz display.
80 FPS video signal / 80 Hz display.
60 FPS video signal / 60 Hz display.
50 FPS video signal / 50 Hz display.

Enough for smooth animations.

Older iPhones:
60 FPS video signal / 60Hz display.
50 FPS video signal / 60Hz display.
35 FPS video signal / 60Hz display.
15 FPS video signal / 60Hz display.

but what happens when you use this combination?

Yes, ProMotion is specific to the iPhone 13 Pro / Max but I am talking about part one of the system. That part which building video signal with FPS.

I think that part one of the system is same for 60Hz and 120Hz displays.

 

[Lubidubi]

On iOS 15.3 beta 1 my iphone 7 feels much better now!! 🤗

 

[ericwn]

10 year old dinosaur Intel i5 2500K still runs the latest games just fine but a 2 year Apple CPU made with the most modern technology struggles with animations in mobile OS.. yeah right.

Apples and oranges.

 

[vtuberalpha]

Remember the most powerful chip ever put in a smartphone (costs upwards of 1000€) that quite literally competes with actual x86 desktop CPUs 2-3 years ago?

Ding Ding! It is now unable to handle iOS' UI without any lag while being vertically integrated at the same time, now pay up for the newest 120hz 13 Pro!

 

[FILIPSN007]

I sent this discussion to Apple via feedback app so we are sharing love, smile and hugs. 😅
Everybody loves Apple! 😘

join me...

 

[Andrey11]

By the way, the situation on iOS 15.3 Beta 1 has not improved compared to the iOS 15.2? Any changes for the better?

 

[vtuberalpha]

By the way, the situation on iOS 15.3 Beta 1 has not improved compared to the iOS 15.2? Any changes for the better?

Not in my experience on my XS, seems just as sluggish at times.

 

[BladeRunner95]

I sent this discussion to Apple via feedback app so we are sharing love, smile and hugs. 😅
Everybody loves Apple! 😘

join me...

Apple; “but there is nothing wrong here, these older phones are functioning exactly as planned”… “oh, I mean yes we’ve got all our engineers working as hard as they can to fix this simple issue!”..

 

[I7guy]

Apples and oranges.

I see what you did there.

 

[AppleShareholder]

Not in my experience on my XS, seems just as sluggish at times.

*sigh*
Another update that I'll have to skip.
What is even the point of having long software support if I have to constantly look out for ways Apple is trying to cripple my device and so I end up not updating at all?

 

[vtuberalpha]

*sigh*
Another update that I'll have to skip.
What is even the point of having long software support if I have to constantly look out for ways Apple is trying to cripple my device and so I end up not updating at all?

There was a very similar issue on iOS 14 that affected the 12s and XS/XR and it got fixed on like iOS 14.4 or somewhere around that mark but not completely.

I just hope they prove me wrong and fix it sooner on 15 than that late in the software cycle (maybe 15.3?).