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iOS 4.1 on iPhone 3G shows marked improvement in speed test

post #1 of 71
Thread Starter 
As expected, iPhone 3G performance improves considerably when running iOS 4.1 in an informal speed test.

Lifehacker has posted a video comparing an iPhone 3G running iOS 4.0 with one running iOS 4.1. In the "tests," which are shown side-by-side, iOS 4.1 bests iOS 4.0, sometimes by as much as 10 seconds.

iOS 4.1 won all four tests, which involved sending a text message, locating a store in Google Maps, displaying a photo, and loading a website. The tests were conducted on a single iPhone and then stitched together. The version of iOS 4.1 used was a "final release" version.

In testing, the most noticeable difference was "UI responsiveness." The UI for iOS 4.1 "didn't get stuck nearly as much" on interface elements or when entering text.

Apple Chief Executive Steve Jobs announced Wednesday that the iOS 4.1 update will ship on Sept. 8. Jobs specifically mentioned iPhone 3G performance as a "bug" that would be fixed with the update. Long-awaited proximity sensor and bluetooth fixes will also be included in iOS 4.1.



Users who upgraded to iOS 4 on their iPhone 3G have reported serious slowdown of their phones, with some units becoming "unusable." In July, Apple told the Wall Street Journal that it was aware of the reports and looking into the matter.

Several key features of iOS 4, such as multitasking and data protection, are disabled on the iPhone 3G.

post #2 of 71
Like people are saying on Lifehacker and Gizmodo, there needs to be a test between 4.1 and 3.1.3. 4.0 is so bad that anything is going to look better while 3.1.3 is the benchmark for the phone.
post #3 of 71
I wonder if it's a bug-fix or an overall improvement to the code or the stack. The latter would mean improved performance on all devices running iOS 4.1, where the former would probably mean no improvements for iPhone 3GS and iPhone 4 users.
post #4 of 71
great point i downgraded my iphone, did some tweeks with my wifes iphone (turned off searchlight)
that did improve it, but it still isn't quite as responsive as my 3.x

soooooo, when someone does this comparison i will wait till it makes sense, i don't want to go through another downgrade
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post #5 of 71
The video has two iphone 3GS's being demonstrated, not 3G's...
post #6 of 71
Quote:
Originally Posted by KingKuei View Post

I wonder if it's a bug-fix or an overall improvement to the code or the stack. The latter would mean improved performance on all devices running iOS 4.1, where the former would probably mean no improvements for iPhone 3GS and iPhone 4 users.

4.1 appears to be marginally faster across the board, but the 3G iPhones that were affected (not all were having this problem) are seeing huge gains. So it appears there is some code refining and a big fix for whatever was ailing some 3G iPhones.
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post #7 of 71
I hope that Apple also corrected the fact that the clock on my iPhone 4 does not synchronize automatically. My old 3G was always within 1/10 of a second of my "atomic clocks", but the iPhone 4 drifts off as much as 40 seconds and will not set itself automatically. Yes, the "Set Automatically" is ON
post #8 of 71
Quote:
Originally Posted by dblackwood72 View Post

The video has two iphone 3GS's being demonstrated, not 3G's...

hmm...how can you tell? I know it says "3GS" on the video title, but in their post they say it's a 3G...
post #9 of 71
Quote:
Originally Posted by solipsism;

4.1 appears to be marginally faster across the board, but the 3G iPhones that were affected (not all were having this problem) are seeing huge gains. So it appears there is some code refining and a big fix for whatever was ailing some 3G iPhones.

I wonder what it is that makes some 3G iPhones different from others. Mine was affected and after suffering from an almost unusable phone for a few weeks, I downgraded it. The added features in iOS4 were just not enough to put up with the constant lag.
post #10 of 71
Quote:
Originally Posted by joshong View Post

hmm...how can you tell? I know it says "3GS" on the video title, but in their post they say it's a 3G...

Both of those phones have the compass app which was not included on the 3G
post #11 of 71
When I installed 4.0 on my touch 2g Safari seemed a lot faster, while the rest of the system was just as fast or a little slower. I ran wallpaper and multitasking though (not approved), so maybe 128mb of RAM was the reason for the slowdown. However since this test was on iPhone I would not have expected RAM to be a problem.

But I don't have to worry about this anymore. I sold my 2g iPod touch yesterday and am in process of upgrading to 4th gen (totally skipped over v3 due to its suckieness) Hopefully it will blow me away speed wise, both because of this update and because of A4.
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post #12 of 71
Quote:
Originally Posted by dblackwood72 View Post

Both of those phones have the compass app which was not included on the 3G

thanks! i'll look into it.
post #13 of 71
Quote:
Originally Posted by dblackwood72 View Post

Both of those phones have the compass app which was not included on the 3G

I don't see the compass app. Am I missing something?
post #14 of 71
Quote:
Originally Posted by joshong View Post

I don't see the compass app. Am I missing something?

Scratch that... I was looking at the clock app thinking it was the compass. Sorry for any confusion.
post #15 of 71
My 3G after "upgrading" to 4.0.

Touch screen.
One thousand one
One thousand two
One thousand three
One thousand four

I hope this fixes it.
post #16 of 71
Still not snappy but an amazing improvement. I can't wait to install this on my 3G.
post #17 of 71
Quote:
Originally Posted by Tofino View Post

I wonder what it is that makes some 3G iPhones different from others. Mine was affected and after suffering from an almost unusable phone for a few weeks, I downgraded it. The added features in iOS4 were just not enough to put up with the constant lag.

There will be variances in the component makers and/or the model number of that component and/or batches of a component, but that surely isnt the only possibility and I dobt well ever know for sure. I warned my nephew not to update his 3G, but he did anyway and he says it was a little faster with 4.0 than it was with 3.x, yet I know several who had issues with the update. its an odd one, that is for sure.
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post #18 of 71
I'm waiting with baited breath for AVRCP, since I just got a great bluetooth stereo headset.
post #19 of 71
That was a long time to wait for a performance bug fix. Must have been optimizations for A4 that didn't translate to the previous chipsets.
post #20 of 71
Wow, amazing C64 music!!! Is that available on iTunes )
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post #21 of 71
Quote:
Originally Posted by alphajack7 View Post

My 3G after "upgrading" to 4.0.

Touch screen.
One thousand one
One thousand two
One thousand three
One thousand four

I hope this fixes it.

fixed
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post #22 of 71
Quote:
Originally Posted by delete View Post

Like people are saying on Lifehacker and Gizmodo, there needs to be a test between 4.1 and 3.1.3. 4.0 is so bad that anything is going to look better while 3.1.3 is the benchmark for the phone.

Exactly. One day on 4.0, I already gave up texting and called people instead.
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post #23 of 71
Quote:
Originally Posted by solipsism View Post

There will be variances in the component makers and/or the model number of that component and/or batches of a component, but that surely isnt the only possibility and I dobt well ever know for sure. I warned my nephew not to update his 3G, but he did anyway and he says it was a little faster with 4.0 than it was with 3.x, yet I know several who had issues with the update. its an odd one, that is for sure.

I more suspect a problem in the software config. Completely resetting the phone seems to fix the problem in all cases vie seen described, at least for a while. This implies to me that there is an errant process, perhaps in a driver specific to the 3G or related to handling the virtual memory system.
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post #24 of 71
It's 3G. 3GS would have battery indicator, if it is not disabled by hand (which not many users do).

@Programmer: iOS has no virtual memory system.

As to the "fix", 4.1 also removes Google notes over the air sync and SMS spotlight search - guess these two were too tough for poor old 3G. It's also why disabling Spotlight in Prefs makes sense.

My launch speeds: 3G with 4.1, set as a new phone. 46 apps, 327 songs, 319 photos. Launch times after cold boot (s):
Maps 5.1
iPod 3.2
Settings 3.1
SMS 2.7
camera 4.0
ical 4.7 (incl. times to refresh google calendars, this was MUCH faster in 4.0.x)
notes 3.1
post #25 of 71
For the record, my 3GS has a marked improvement so I expect that the issue was the codebase for something major in the OS needed to be improved, and that improvement has carried over to the 3GS. On my 4G, it seems about the same, if not a tad quicker, but the A4 in the iPhone 4 is fast enough that there wouldn't be that much difference.
post #26 of 71
I'm still not seeing any of the issues some people are stating here. If anything in some cases it's been faster than running 3.1.3 most notably with apps like Bento.

Be interesting to see how the 4.1 update goes though.
post #27 of 71
Cool... Now what will the trolls say, I wonder.
post #28 of 71
Quote:
Originally Posted by striker_kk View Post

Exactly. One day on 4.0, I already gave up texting and called people instead.

Wow, you went retro? I'll bet you surprised your friends.
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post #29 of 71
Since upgrading to 4.0 my problem has not been slowness, it has been my own private antenna gate. Reception had decreased dramatically. How do I know? I borrowed a friends new iphone - you know the one withthe alleged antenna problem and used it in the same location as my 3g and while mine had reception/dropped calls, etc, the 4g did not. I am hoping without hope that the software update addresses this issue for me. Since I am no longer under contract with AT$T, I really would hate to have to buy a new phone and get locked in under a new 2 year contact
post #30 of 71
Quote:
Originally Posted by joe in miami View Post

Wow, you went retro? I'll bet you surprised your friends.

Yep. But hey, 4.1 is snappier.
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post #31 of 71
Quote:
Originally Posted by stooovie View Post

@Programmer: iOS has no virtual memory system.

Yes, it does.
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post #32 of 71
Having used iOS 4.1 a few days on my 3G, I can safely say that it is much, much better than 4.0. The phone is entirely usable again.

Some problems with basic functionality that I had:
  • Screen unlock unresponsive, in particular if a podcast was playing.
  • Sliding to accept incoming phone calls was unresponsive.
  • Playing video was sometimes incredibly slow to get started.
  • Safari would block the UI regularly.
  • Safari had problems when switching between the 3 web pages I always have open.
  • Typing with the keyboard, incl. texting, could be unresponsive.

These issues are largely fixed now. It's also better overall when using the Settings app, even though it's not nearly as fast/smooth as a newer model.

In daily use, it's doing OK for my somewhat limited needs. I'm glad Apple did the right thing here. BTW, I should note that I have Spotlight turned on, but only for apps (both under 4.0 and 4.1).
post #33 of 71
Quote:
Originally Posted by Programmer View Post

Yes, it does.

Its clear hes referring to a "backing store within virtual memory just as most such discussions on the subject do, in which case iOS does not have virtual memory as they know it.

Heres a link Im posted several times on the subject of virtual memory.
http://developer.apple.com/mac/libra...outMemory.html
PS: Im perfectly fine with pedantic replies, but at least specify as to why you are not using the well worn colloquial definition in your counter-statement.
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post #34 of 71
Quote:
Originally Posted by solipsism View Post

It’s clear he’s referring to a "backing store” within virtual memory just as most such discussions on the subject do, in which case iOS does not have virtual memory as they know it.

Here’s a link I’m posted several times on the subject of virtual memory.

http://developer.apple.com/mac/libra...outMemory.html
PS: I’m perfectly fine with pedantic replies, but at least specify as to why you are not using the well worn colloquial definition in your counter-statement.

It is a virtual memory system and Apple's documentation clearly states that it is. Didn't seem much reason to provide any more info when 2 minutes of examining the documentation or using Google turns up the necessary information. Having a backing store for modified pages is not a requirement for calling it "virtual memory" -- there are VM systems without any external backing store at all.


Oh, and he didn't provide any information proving it didn't when he contradicted my statement.
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post #35 of 71
Quote:
Originally Posted by sacatty View Post

Since upgrading to 4.0 my problem has not been slowness, it has been my own private antenna gate. Reception had decreased dramatically. How do I know? I borrowed a friends new iphone - you know the one withthe alleged antenna problem and used it in the same location as my 3g and while mine had reception/dropped calls, etc, the 4g did not. I am hoping without hope that the software update addresses this issue for me. Since I am no longer under contract with AT$T, I really would hate to have to buy a new phone and get locked in under a new 2 year contact

The 3G will always come up short against the 4G as the 4G has a very good antenna. Well as long as you don!"'t short it out. I'm not sure why people still are under the influence of all the negative press around the 4G. Even after a self done "demo" like yours you still seem to think the 4G has a lesser antenna system. I don't get it.


Dave
post #36 of 71
Quote:
Originally Posted by solipsism View Post

Its clear hes referring to a "backing store within virtual memory just as most such discussions on the subject do, in which case iOS does not have virtual memory as they know it.

It does no good to sink to the level of ignorance often seen in these forums. It isn't always easy to convey technical info in short bytes here, but that is no reason to compromise.
Quote:
Heres a link Im posted several times on the subject of virtual memory.
http://developer.apple.com/mac/libra...outMemory.html
PS: Im perfectly fine with pedantic replies, but at least specify as to why you are not using the well worn colloquial definition in your counter-statement.

IOS has a VM system by any definition. It doesn't support a paging file for user data though. Read only data, that is chunks of code do get managed by the VM system. Here there is no need for the paging file as code should be static and can be easily teread as needed from flash.

In many ways it can be likened to running Linux without swap turned on.



Dave
post #37 of 71
Does iOS 4.1 beta run faster on the iPhone 4 as well??? Has anyone tested it?
post #38 of 71
Quote:
Originally Posted by wizard69 View Post

The 3G will always come up short against the 4G as the 4G has a very good antenna. Well as long as you don!"'t short it out. I'm not sure why people still are under the influence of all the negative press around the 4G. Even after a self done "demo" like yours you still seem to think the 4G has a lesser antenna system. I don't get it.

Yes, the whole "antennagate" thing frustrates me from this perspective -- it makes it so clear that people hear a soundbite, make up their minds based on invalid thinking founded on inaccurate information, and then cling to their notions forever.
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post #39 of 71
It seems, when he previewed iOS 4.2, Jobs kinda hinted at cameras: http://www.ankleskater.com/pagemaker...20100904224100
post #40 of 71
Quote:
Originally Posted by Programmer View Post

Yes, the whole "antennagate" thing frustrates me from this perspective -- it makes it so clear that people hear a soundbite, make up their minds based on invalid thinking founded on inaccurate information, and then cling to their notions forever.

What was strange there is that he had the evidence right in front of him that is consistent with testing.

By the way it is always possible Apple screwed up something in the RF subsystem. Even if that did happen it has been demonstrated again and again that iPhone 4 does much better than the average phone in low signal strength areas. Well better than anything Apple had made.

The thing that kills me here is that we have a whole generation of people that apparently have no experience at all with radio technology. That is the use of an AM/FM radio, installation and adjustment of a TV antenna, a short wave radio, HAM radio or even commercial systems. If they did they would realize that there are many factors involved in getting proper reception.

As an interesting aside I was at work a while ago talking to somebody when his cell phone (non Apple) went off. He had a surprised look on his face because the building we are in is noted for blocking most RF, be it cell, TV or whatever. RF is a funny thing, sometimes the signal gets through when 90% of the time it doesn't.

I mentioned HAM radio above as it has an intersting sub culture of people that like to operate at very low powers. While the specific radio used is a factor there is a lot more to getting the contact than the radio itself.

Dave
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