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For people with iPhone 5 having inconsistent/slow speeds but no problems connecting to any network, try this new fix that worked for me :

Turn the Bluetooth ON then OFF.

Since Bluetooth is using the same band as WiFi 2.4Ghz, there may be some leakage somewhere even when you are using the 5Ghz band.
 
My 4S has had a lot of issues connecting to networks, as well. I have to manually select which WiFi network I want to use in the settings. It no longer auto-connects.
 
All my problems have been solved by cycling bluetooth (previously my problems were solved by a reboot) So I then deleted my phone from my car's bluetooth and my car from my phone, and now I have no problems at all. Previously anytime my phone paired with my car, WIFI stopped until I rebooted.
 
I just turned off Bluetooth and immediately I was able to rip through the speedtest, whereas before it was awful. Interesting.
 
For people with iPhone 5 having inconsistent/slow speeds but no problems connecting to any network, try this new fix that worked for me :

Turn the Bluetooth ON then OFF.

Since Bluetooth is using the same band as WiFi 2.4Ghz, there may be some leakage somewhere even when you are using the 5Ghz band.

Thank you! In fact it also fixed the problem I was having with wifi sync on itunes. Every time I tried to run it from phone or itunes, it would knock my imac off the network and sync would then fail. Never was able to get it to work. I even rebooted airport router, imac, iphone and even did a restore as new on iphone to no avail. Did the BT on/off trick, and wifi sync worked perfectly for the first time.
 
The BT on/off trick didn't work for me. Several tries and restarting the phone, didn't help.
 
When I called apple, they told me about the Bluetooth toggle. But its been limping along after the last network reset. Ironically, I actually tried to use Bluetooth for the first time today and it could not find any devices. Dead as a doornail.

If you think about it, this makes sense as I believe the same chipset runs both the wifi and BT.

My HP laptop could see the iphone though. So Pulled out my 3GS and it was able to find the BT device in less than .5 seconds. IP5 FAIL!!

Lends credence to the thought the chips are buggy. Or drivers if you want to have faith in Apple. Either way, unfortunate confirmation some of these are complete terds.

Called AT&T, they are going to send me a new sim card for a 3GS so I can upgrade from the buggy 5 to the more stable and reliable 3GS. Slow and steady wins the race....
 
New phone did the trick

Sorry to announce that, but got my phone replaced and now it's fast on wifi as it should be.... So I don't think it's software related
 
The bluetooth reset works for me at least partially. On my 5 Ghz N network with my iPhone 5, I get about .4Mb download speed. After the reset I get about 24Mb download speed the first time (using the Speedtest.net app) and there after it goes down to about 10-15Mb which is sure a WHOLE lot better than I got before! So, what is really up with this is anyone's guess I suppose.
 
The bluetooth reset works for me at least partially....

Well, at least it did. I played with it a few more times turning it on and off, back to .4Mb/s so I rebooted the device and still no love. At the very least it isn't a consistent fix.
 
My iPhone will connect to most WiFi networks, but it doesn't do so well. I downloaded a 60MB file from Dropbox and my 3GS (on the same network) finished at least three minutes ahead of my 5, which actually said download failed at 40%.

The Apple Store refused to replace my iPhone because they could not replicate the issues and blamed it on my ISP (which wasn't the problem when my 3GS, iPad 2, and Nexus 7 works fine).

I don't often download 60MB files and websites seem to load OK, so I'll wait a few months before replacing it as my local Apple Store is loaded with people.
 
It's the phone and or software, not the case if it's plastic with a metallic look to it.

If it's a metal case, then yes, this could make the signal worse, but who is still using all metal cases?
 
When I called apple, they told me about the Bluetooth toggle. But its been limping along after the last network reset. Ironically, I actually tried to use Bluetooth for the first time today and it could not find any devices. Dead as a doornail.

I find this hilarious. Apple support, when it comes to denying a problem, says "we don't look at those discussion forums", "we can't look at those to verify problems.." etc. But when we find something that seems to help a significant number of people like the relationship to bluetooth and wifi problems, it's not 1 day until they start suggesting it. Sure you don't pay attention to the forums.... sure you dont...
 
I find this hilarious. Apple support, when it comes to denying a problem, says "we don't look at those discussion forums", "we can't look at those to verify problems.." etc. But when we find something that seems to help a significant number of people like the relationship to bluetooth and wifi problems, it's not 1 day until they start suggesting it. Sure you don't pay attention to the forums.... sure you dont...

I can't think of any good reason they'd not have someone keeping close track of any significant threads about widespread issues, on their site or even this one. Would save them a bunch of time in solving the problems since those threads tend to have some pretty smart people in them that at least narrow the issues down, and point in the right direction.
 
I am having WIFI connecting issues, none of the possible solutions on this thread have resolved the issue..

I realize there are quite a few different issues going around - my iPhone 5 appears to connect the WIFI but when I try to do anything on Safari, email, apps etc it just constantly is searching...appearing to try to connect.. and it never does.. I've sat waiting for long periods the internet to load, NOTHING. This WIFI issue happens everywhere I've tried to connect to WIFI (my residence, at my friends home and at my work place)

I've visited the Apple Genius bar twice regarding this. When I visit the store the phone seems to connect to the store WIFI no problem / issue does not appear to happen in store. Therefore both times they've sent me away and told me to check my network settings/have workplace check network settings/hard reset.. nothing is working.. last time I visited the bar they told me they we're "writing in the notes" of my visit - if this still goes on they will swap me out a new next visit.

Will a swapped out one resolve this issue? am thinking of paying ANOTHER visit to the apple store. should I wait for Apple to introduce a software update? any advice is appreciated..
 
Guys it seems you are only posting one side of the issue.

Post what wifi Router your are running as well as much information about your wifi setup as possible. ie. Router make,model,firmware settings are you running all 802.11 or just N, both bands or just one? things like that.

The issues and fix's here are sporadic but not many are posting there router/wifi settings.
 
I find this hilarious. .... we find something that seems to help a significant number of people like the relationship to bluetooth and wifi problems, it's not 1 day until they start suggesting it. Sure you don't pay attention to the forums.... sure you dont...

They actually told me this well over a week ago. But I dismissed it as bunk at the time and that the continual toggling over wifi itself combined with network reset got mine working better. So they have known for a time before it was posted (in this thread anyway). During that same call, they did say they are aware of the issues and OS updates are hoped to cure it. There take is if one of these attempts improves it, they feel its software and not hardware. But if none of them do anything, they recommended to return it as its hardware
 
Guys it seems you are only posting one side of the issue.

Post what wifi Router your are running as well as much information about your wifi setup as possible. ie. Router make,model,firmware settings are you running all 802.11 or just N, both bands or just one? things like that.

The issues and fix's here are sporadic but not many are posting there router/wifi settings.

I would say that makes sense if every device acted the same when using that particular wifi router. But if older devices can deal with your current router....its not the router, no?

I see where folks are throwing $200 at the latest wonder router that also can make a mean cappuccino and clear up your complexion, but if you are brute forcing your signal because your new shiny device can only deal with super clean and hyper strong signals due to being inferior to old outdated devices, one needs to re-examine how much better that new shiny thing works.

Bottom line, iphone 5 should connect to any working router without any issue and not be required to be sitting within 5ft of it when you can be 100ft away using another device which works perfectly with that router.

Apple simple messed up here, but it happens, they are not immune to mistakes. The real tell is how gracefully and immediately they address it. So far, Cooks leadership is more of a failure than this little item. Hard to believe his approach is to hide under a rock versus deal with it.

Of course if the diehards are good with running out to buy the $200 wonder routers versus demand apple fix it....whats your incentive to fix it over telling them its the router.
 
Bottom line, iphone 5 should connect to any working router without any issue and not be required to be sitting within 5ft of it when you can be 100ft away using another device which works perfectly with that router.

The irony in my case is that I experienced it connecting to an Apple Time Capsule where the phone was about 18 inches away. Not good when Apple can't even get their phone working properly with their router.
 
As previously posted, I had an appointment at an Apple Store – the short version of my story is that my unit was replaced and this seems to have done the trick. The new iPhone is able to retain wireless connection on my home network.

As the genius swapped the units over and was testing the new one, he mentioned that he hadn’t been able to repeat the problems on the store’s open network (no surprises, there!) and although he appreciated the steps I had taken (see below), it might be a problem with my network at home. I inferred from that is that having a further replacement unit if this one acted up, wasn’t a given.

However, just after as he stopped talking, I noticed that he looked a little surprised – and then added that the new iPhone had clearly connected to the Store network a lot faster than the original phone.


…Will a swapped out one resolve this issue? am thinking of paying ANOTHER visit to the apple store. should I wait for Apple to introduce a software update? any advice is appreciated..

According to (at least) a couple of posters on the Apple support forums, they were told by Apple, that they’re unsure if this problem is a software or hardware problem. IIRC correctly, both had their phones swapped out and the problem was fixed – I’ve read a few other people reporting that this fixed the problem for them, but in one case, I’m sure they needed a second replacement (so the first one was no better).

From my own experience, from what the Genius was saying, it didn’t sound like he/they are sure if it is a hardware problem or not – but a replacement did fix the problem (keeps finger crossed) for me.

Guys it seems you are only posting one side of the issue.

Post what wifi Router your are running as well as much information about your wifi setup as possible. ie. Router make,model,firmware settings are you running all 802.11 or just N, both bands or just one? things like that…..

The main reason I hadn’t posted all those details is because I had tried so many variations, both hardware and setting. All other devices (including ones running iOS 6) were able remain on the wireless without problem (and the iPhone 4 was consistently faster according to the Speedtest.net app). (Incidentally, my upload speed was consistently ten times faster than the download one). The iPhone 5 was not fit for this particular purpose – that was the entire issue from my point of view! However, here’s a bit more info…

I have a Virgin Media Superhub and also an Airport Extreme (second generation, I think). I tried each one separately and with the latter as a bridge. Firmware for each unit was up to date.

I was largely trying 802.11n but did use all flavours. As mentioned previously, I downscaled security.

Whatever I tried, my connection lasted tended to last several minutes – switching WiFi off and on would 'fix' the problem for a few minutes, but on Friday evening, I managed to get a massive 30 minutes, but then wasn’t able to get any connection no matter what I did.
 
The WiFi issues are varied with some unable to connect, some dropping connection, some -1 Mbps down speed and some about 50% of expected Mbps down speed. I'm in the latter camp. I connect no problem, I don't drop connection, however my expected speeds on occassion have been about half of my iMac's download speeds. Some speed tests are great and from time to time worse.

I'm really hoping this is a 6.0.1 or Time Capsule firmware update for me. I'd hate to do a swap for a replacement if I'm a month away from a patch. I've got no issues with the fit and finish of the rest of the device.
 
I installed the ASUS RT-N66U router last night and it solved the low\poor quality signal in areas of my house where the iPhone 5 was suffering on the old router (D-Link DIR-655). Speed is not great in these areas (3M down\2 up), but it's much better than the 56K kind of crap I was getting before. I too, really hope it is software cause everything else about the phone is perfect. With the quality strike at Foxconn I am wondering if some of us have shoddy antenna installs in our iPhone 5 devices because of their rush-rush to get these phones made and out the door though.
 
FWIW, I called AppleCare this morning and after being transferred one level "up" I was told they do acknowledge the issue and are working on a fix. Then she suggested I manually enter the network info under the "Other" option under WiFi.

Even though the phone may already recognize the network, click "other" and enter the info, rather than just clicking the network name.

This worked for me.... but strangely on my phone i have the spinning lines under choose network as if it is trying to find a network still...... wonder if this related to my crap battery life.

I had very poor battery life on my 4 as soon as i upgraded to IOS 6 and the same on my 5.

As for the wireless issue I am pretty sure it's router specific, as my iPhones won't connect to the router on my desk which is a dlink dir 655 BUT will happily connect to the linksys thats sat at the other end of the house and at the other end of a pair of powerline units.
 
I was having inconsistent wifi (speed and connectivity) and problems with AirPlay (killing router) with my iPhone 5. My router is a Linksys E4200. The solution on the following page (regarding CTF) appears to have fixed my problems. iPhone is returning consistent and correct (compared to MacBook and iPad) results using the Speedtest.net app. Airplay is no longer killing the router. The wifi speed issues seemed to be better after I upgraded the router to the newest firmware, but the airplay issues started after that. Seems to be compounded problems with both the iPhone and my router, but this fix appears to have corrected them. Hopefully this can help others.

https://discussions.apple.com/thread/3520018?start=0&tstart=0


Edit: I still appear to be having some problems with connecting my iPhone 5 to the 5GHz band, although other devices (MacBook and iPad) are not having 5GHz band problems.
 
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