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Slow wifi in iOS 8?

iphone 5S, clean install of iOS 8.0.2, and wifi is excruciatingly slow

some of the apps give a network timeout as well.


Disable cellular data when you're at home using wifi. Temporary fix for this issue. Been 3 days and not a single network timeout anymore when using wifi. Give it a try. I cant believe a lot of people still having the timed out issue. I never had this anymore since i disable cellular data when im at home with wifi.

ImageUploadedByTapatalk1411832669.748994.jpg
 
Slow wifi in iOS 8?

Disabling cellular and/or Bluetooth makes no difference. When I run into this problem rebooting my phone is the only fix.

I just ran into it very badly again. My 5s actually dropped off my Wifi during a speed test. When the test completed, I was getting 6 Mbps down and 3 Mbps up. Tried disabling cell and BT and nothing changed. My iPad 2 on iOS 7.1.2, sitting next to it, was getting 33 Mbps down and 11 Mbps up. Rebooted my 5s and then it got 28 Mbps down and 12 up. All tests on the 5.4 band.

The only thing I had been doing was using AirPlay, which got progressively worse. Tried Safari and it said I lost the network connection. My 2.4 network didn't even show up in the Wifi list and it took my 5 about 20 seconds to show up. Rebooted 5s and problems went away. If rebooting fixes the problem, it has to be an iOS problem.

Before reboot:
ImageUploadedByTapatalk1411833126.628068.jpg

After reboot:
ImageUploadedByTapatalk1411833138.512419.jpg

On a related note, when problems start occurring, ping tests from my 5s start reporting ping times over 50 ms to my router with frequent dropped packets. Normal ping times are 2 ms with no dropped packets.
 
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Fluctuating wifi

Since going to 8.02 the wifi signal off of an Aiport Network is fluctuating wildly. Most of the time signal is incredibly weak, even 10 feet from the router, and others it's almost full strength. Have rebooted both iPad Air and iphone 6 as well as router. No improvement. The signal was fine on 8.0 It appears there is something amiss in the new version of the iOS. Spouse's 5s on 8.0 is working fine.
 
That's with the 2.4 Ghz band (Linksys E3000). The 5 Ghz band works fine, except my phone won't stay on the 5 Ghz channel and keeps switching to the 2.4 one. The range of the 5 one is about 75% of what it was under iOS 7.1.2. To get reliability with 2.4 I need to be within about 10 feet of my router.

My Internet connection is 100 Mbps by 10 Mpbs, but my point of that post was the 61% packet loss. For me the problem is dropped packets. iOS 8 does not handle interference well at all. I used to have no problems with 2.4 despite a number of neighboring networks, now there's no 2.4 channel that works reliably on my 5s running iOS 8. iPad 2 and iPhone 4s work fine running iOS 7.1.2.

Wifi hotspot doesn't appear to be that accurate. When I tested with my iPhone 5s, it would fluctuate between 30 Mbps and 1 Mpbs with the phone lying on a flat surface.

wifi hotspot, u mean wifi sweetspots the app i mentioned? it is accurate, it test throughput between the device & the router, which on 2.4ghz is a max phy(theoretical) rate of 72mbps, 5ghz its 150mbps if ht40 is used. i got a stable 57-61mbps on my iphone 5 2.4ghz on both ios 7.1.2 & 8.0, iphone 6 is a stable 64-68mbps on 2.4ghz both ios 8.0 & 8.0.2. with your packet loss fluctuations like that would be expected. i had an e3000 but its now dead, the stock firmware was crap, try dd-wrt or tomato victek/shibby/toastman. im not a fan of broadcom routers they been problematic & had horribly jittery wifi radios, couldnt take high throughput sustained, more than 2 clients caused it to panic etc. atheros(now qualcomm atheros) has been excellent for me, strong, stable, long range high tx power radios, higher throughput. quantenna radios are also supposed to be good. i use a tl-wdr4900 v1 with dd-wrt & its great with super range, the host router upstairs is my dir-825 b1 also on dd-wrt, also doing fine with all 4 ipads, 4 iphones, & 1 android, stable good throughput on all. they are mixed with ios 7.1.2 & ios 8.

not telling you to go spend hundreds on a new router that may or may not solve the issue but im just saying (but do look into those 2 firmwares, they offer a lot more features & performance than stock, & are free)

if youre on the stock linksys firmware id try the following settings in bold for both bands:


Frame Burst: Disabled (Default: Enabled)
Authentication Type: Auto (Default: Auto)
Basic Rate: All (Default: Default)
Transmission Rate: Auto (Default: Auto)
N Transmission Rate: Auto (Default: Auto)
Transmission Power: High (Default: High)
CTS Protection Mode: Auto (Default: Auto) <--- can also try disabled

Beacon Interval: 100 (Default: 100, Milliseconds, Range: 20 - 65535)
DTIM Interval: 1 (Default: 1, Range: 1 - 255)
Fragmentation Threshold: 2346 (Default: 0000, Range: 256 - 2346)
RTS Threshold: 2347 (Default: 0000, Range: 0 - 2347)

under QoS

WMM Support: Enabled Disabled (Default: Enabled)
No Acknowledgement: Disabled (Default: Disabled) <--- can try enabled too

ensure you use at least wpa/wpa2 mixed with AES ONLY, no TKIP or AES+TKIP. you also mentioned 5.4 band, if possible(if they are listed as it varies with router region it was bought in) use the upper 5ghz band, channels 149-165, they offer more transmit power & throughput from both the router end, & clients(ur iphone) end & have ht40(40mhz channel or 20/40 dynamic etc as stock fw call it) enabled
 

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Slow wifi in iOS 8?

For what it's worth I run the Toastman Tomato firmware and never had problems. I've tried playing with the advanced wireless settings and nothing helps. I already run WPA2. My 5 ghz is N only, 2.4 is "auto". Frame burst is disabled on 2.4.

Considering the problems started after updating my 5s to iOS 8, no other device I have is having a problem, restarting my 5s fixes things for awhile and there are threads here and the Apple forums (and tons of tweets) about Wifi problem with iOS 8 (many using Apple's router), I'm convinced it's a problem with iOS 8 and not my network setup.

As I've mentioned if I sit in the same room as my router things are great, but with iOS 7.1.2 I could go anywhere in my house (townhouse) and even my back yard and still have a stable (albeit somewhat slower) connection. My router is on my second floor and now on the first floor it's problematic.

Edit:

Look how many Wifi issue threads there are for iOS 8:

https://www.google.com/search?q=ios...wifi+problem+site:discussions.apple.com&hl=en

Here's a report that turning off location services for Wifi networks supposedly fixes Wifi. I have no idea why that would work,

http://www.techradar.com/us/news/ph...ios-8-wifi-battery-drain-fix-problems-1266599

For now I've installed Apple's Wifi logging profile. When the problem occurs again (more than minor loss) I'm going to file a bug report.
 
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Thanks for the tips!

I went in and switched my router from WEP to WPA. New iphone now flies on wifi.
 
For what it's worth I run the Toastman Tomato firmware and never had problems. I've tried playing with the advanced wireless settings and nothing helps. I already run WPA2. My 5 ghz is N only, 2.4 is "auto". Frame burst is disabled on 2.4.

Considering the problems started after updating my 5s to iOS 8, no other device I have is having a problem, restarting my 5s fixes things for awhile and there are threads here and the Apple forums (and tons of tweets) about Wifi problem with iOS 8 (many using Apple's router), I'm convinced it's a problem with iOS 8 and not my network setup.

As I've mentioned if I sit in the same room as my router things are great, but with iOS 7.1.2 I could go anywhere in my house (townhouse) and even my back yard and still have a stable (albeit somewhat slower) connection. My router is on my second floor and now on the first floor it's problematic.

Edit:

Look how many Wifi issue threads there are for iOS 8:

https://www.google.com/search?q=ios...wifi+problem+site:discussions.apple.com&hl=en

Here's a report that turning off location services for Wifi networks supposedly fixes Wifi. I have no idea why that would work,

http://www.techradar.com/us/news/ph...ios-8-wifi-battery-drain-fix-problems-1266599

For now I've installed Apple's Wifi logging profile. When the problem occurs again (more than minor loss) I'm going to file a bug report.

whats your tx power, ack timing & interference setting(the one with manual, wlan auto etc options) at?
 
Slow wifi in iOS 8?

whats your tx power, ack timing & interference setting(the one with manual, wlan auto etc options) at?


They are set to the default values: 0, 0 and None respectively. I've played with the interference setting and it doesn't make things any better, not that it matters since the router isn't reporting any interference.

Again, I'm not the only person having problems with iOS 8, so I doubt it's my router.
 
They are set to the default values: 0, 0 and None respectively. I've played with the interference setting and it doesn't make things any better, not that it matters since the router isn't reporting any interference.

Again, I'm not the only person having problems with iOS 8, so I doubt it's my router.

not saying it is as im not there, but try ack timing to 450, tx power 125mw. the values of 0 = "default", but no one knows what default is, even if theres no change its not good practice to leave settings like those on default. while at it 802.11n preamble should be mixed mode, preamble should be short, interference mitigation at wlan-manual.

with the problematic devices connected & transfering data with their packet loss, what is the noise floor/snr reading the router says?
 
with the problematic devices connected & transfering data with their packet loss, what is the noise floor/snr reading the router says?

89. What's really odd is that my 5s shows a dB of -53 (great) when connected despite the horrible WiFi performance. Makes me think the problem might not be with WiFi, but with iOS's use of it.
 
89. What's really odd is that my 5s shows a dB of -53 (great) when connected despite the horrible WiFi performance. Makes me think the problem might not be with WiFi, but with iOS's use of it.

the raw signal itself at that value is fine with a noise floor of -89 that makes snr of 36, not fantastic but good (snr of about 28 is min to get max link rate the iphone is capable of, every 3db is double strength). im guessing u already done the obvious reset network settings
 
Just ran a side by side test, an iPhone 5 running iOS 7.1.2 and an iPhone 5S running a clean install of iOS 8. The difference is a serious issue...

Any website, any link, especially just browsing macrumors, or searching Amazon, and even searching the App Store (!!!) the iPhone 5 was always faster by 2-5 seconds. You have to see it yourself. Very disappointing. Disabling cellular data did absolutely nothing to improve performance.

iPad air on 7.1.2 side by side with that iPhone 5 had the same performance, did not lag like the iphone 5S.
 
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Slow wifi in iOS 8?

I wonder if any of this has to do with the new Random MAC security feature Apple is using, there was an article about it a couple of days ago, and strangely it only worked when on wifi with cellular data off.

My iPad Air wifi model works fine and always has, even when the phones act up. But my 6, 6+ and mini retina cellular model are all having this problem and turning off cellular fixes it for the most part.
 
Was reading this thread while updating iPhone 6 Plus to 8.0.2 and used WiFi Sweetspots the App to check things out afterwards. Wi-Fi router is AirPort Extreme with ac band. Besides the iP6+ also have iPad Air WiFi only. Have the AirPort Extreme running both 5ghz and 2.4ghz on discreet channels to avoid neighbor's router interference.

The iPad Air 7.1.2 getting 160 mbps. I believe the Air only has n.
The iP6+ 8.0.2 getting 279 mbps. Understand it has ac band.

image.jpg
 
Just ran a side by side test, an iPhone 5 running iOS 7.1.2 and an iPhone 5S running a clean install of iOS 8. The difference is a serious issue...

Any website, any link, especially just browsing macrumors, or searching Amazon, and even searching the App Store (!!!) the iPhone 5 was always faster by 2-5 seconds. You have to see it yourself. Very disappointing. Disabling cellular data did absolutely nothing to improve performance.

iPad air on 7.1.2 side by side with that iPhone 5 had the same performance, did not lag like the iphone 5S.

Wish I read this post before I updated today with a clean install. Just compared my 5s running 8.0.2 with my wife's 5 that is running 7.1.2, It is very disappointing. The iPhone 5 is noticeably faster now using safari. Makes my iPhone 5s seem older than the 5 now. Sure hope they fix this soon.
 
Wifi speed test

So in my retina iPad running 8.0 I'm getting 80.51 mbs download but only 20-27 on an iPhone 6 running 8.0.2. And I'm getting 43 on a 5C running 8.0.2. I was considering dropping some cash on an AirPort Extreme to take advantage of the faster wifi in the 6 but not if the software can't handle it... Especially considering in seeing peeks in the 50s on LTE
image.jpg
 
The same as 7, 8, 8.0.2... 25dl/15ul

See that's the problem - the speed tests are showing the same exact speed. But try it side by side with an iOS 7 device, the difference is tremendous. I didn't believe it either, my speeds have been unaffected by iOS 8 or 8.0.2, but I was shocked by the side by side performance.

Is there an apple support forum we can take this issue to? I tried to find some, and there are only a couple isolated ones with no replies... Maybe there's bigger threads buried somewhere on that discussion page?

Has anyone else tried their ios 8 device side by side with an iOS 7 handset? Anyone have any ideas what could be the source of an issue like this?
 
There should be a permanent fix from Apple. I've tried all the work around and it doesn't seem to help. The wifi problems are extremely noticeable to me right from launch day.

The same spot I'm sitting at had flawless wifi on my previous phone. On the iPhone 6, if is either slow or gets disconnected on its own. Frustrating because everything else about the iPhone 6 has been amazing.
 
Slow wifi in iOS 8?

Just ran a side by side test, an iPhone 5 running iOS 7.1.2 and an iPhone 5S running a clean install of iOS 8. The difference is a serious issue...



Any website, any link, especially just browsing macrumors, or searching Amazon, and even searching the App Store (!!!) the iPhone 5 was always faster by 2-5 seconds. You have to see it yourself. Very disappointing. Disabling cellular data did absolutely nothing to improve performance.



iPad air on 7.1.2 side by side with that iPhone 5 had the same performance, did not lag like the iphone 5S.


I'm finding Safari to be doing some weird things in the background. Some times it gets stuck with a gear spinning in the status bar despite no active page at all. I've had the battery usage screen tell me 30% battery life was being used by Safari, despite me barely using it.

I think it has something to do with Safari trying to load the Spotlight Suggestions and/or Top Hits. I've read disabling both of those in settings speeds up Safari significantly in iOS 8.

I've found force killing Safari and opening it again can also speed it up to near iOS 7.1.2 speeds. That is when Wifi is working correctly.
 
find solution for slow wifi on iPhone 5s for now

hi, i think i find a solution for fixed the slow/dropping wifi on iOS 8.0.2 on iPhone 5s..for now

i noticed when i deleted my iCloud account that upgrade to iCloud drive that I'm using on both my iPhone 5s and my iPad mini retina and created new iCloud account on my iPhone 5s without upgrade to drive and not sign in the same iCloud acc on my iPad..and restore again my iPhone 5s after erase and reset all settings>>change my DNS to 8.8.8.8>>turn off my cellular data..its been about 20 hours my wifi connections working just fine..
so think maybe it because of the iCloud, because i tried so many way before nothing worked :(
(sorry my english not very good? :) thx..
i hope it will worked for anyone who tried it thx:):)
 
Slow wifi in iOS 8?

Reset all network settings that's what fixed my trouble I'm on the iPhone 5s


I'd keep an eye on it. For me restarting my iPhone 5s fixes problems for awhile, but they eventually return, so it's likely resetting the network did nothing but the restart "fixed" it.

For what it's worth, I've done both a reset network settings (which had the annoying side effect of propagating through iCloud Keychain to all my other iOS devices causing them to forget Wifi networks) and a reset all settings.

I've also not updated to use iCloud drive.
 
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