No Wifi after iPhone 3.1 upgrade

But if you see some other threads, you will find, that Apple-People answer to the questions of the users, but unfortunately not in this topic or in other topic, related to this problem, and witch has now 100 pages...But thank you for the link, i will try to get an assistance from Apple via "Feedback".

i know this sounds realy weird but i have the same issu with a 3g and someone told me to put the phone in the fridge. and it realy works for me. as long as the phone is cold i'am able to connect to any any wifi. you don't have to cooldown the entire phone, the upper side will be enough. i think the wifi is there. so for me its a hardware issue maybe caused by the firmeware. wronge voltage to increase the perforance or some thing like that. and most phones are okay with that but some aren't. try it, for me it's the prof for an hardware issus in my case

Same issue here. My wife and I have iphones and her's is doing fine. Mine on the other hand is not. Wi Fi is grayed out and I cannot see any other wi fi sources (work etc). Ive tried to reset my network setting several times with no results. Looks like I will have to try a restore which will suck. I hope someone out there has another idea.

MY SOLUTION: I had the problem under 3.1 and 3.1.2 where I can see the AP but can never connect. My solution was to connect my iphone via ad-hoc network to my Mac, using the internet sharing in OSX, BUT set the channel to 5.
OR set the mac to ad-hoc network and connecting my iphone to it and manually set the gateway on the iphone to the mac ip address and the dns to 8.8.8.8 and after that, I can connect to the internet via safari.
After disconnecting, I find that I can connect to any access point again. It may have been some problem with WIFI regional settings, but this trick works for me.

So wififofum fixed my WIFI too (working through the app as well as through settings after running the program once). Very surprised. It hasn't worked in two months, outside of a couple of minutes after doing a full restore. $2.99 well spent. Now...can we get a real fix to what is clearly NOT a hardware issue?

Nevermind--now I went from working WIFI (for 10 minutes) to greyed out "No Wi-Fi." I think I'm done with Apple hardware for a good long while if this isn't fixed soon.

Try the following:

Settings > Wi-Fi > Turn off Wi-Fi
Settings > General > Reset > Reset Network Settings

reboot iPhone

Settings > Wi-Fi > Turn on Wi-Fi

Have same issue, see Wifi but could not connect have tried everything, downgrade, reset, diefferent combinations

Now I have bought WiFiFoFum over the Store and still same problem see Wifi but could not connect.

::FINALY::
Iphone is cool, so i put it in my freezer for about 20min and tried to connect again over WiFiFoFum and !!!!! BINGO 🙂
Now i can connect and disconnect also over normal menue and on normal room temperature, later i will try to connect to different Wifi to look if this works.

YUUHUUU thx Apple for nothing

it works for me too - unable to connect to the any router, but to the notebook adhoc-network without any problems.

Message was edited by: maxiwanow

Adaptive wrote:
So wififofum fixed my WIFI too (working through the app as well as through settings after running the program once). Very surprised. It hasn't worked in two months, outside of a couple of minutes after doing a full restore. $2.99 well spent. Now...can we get a real fix to what is clearly NOT a hardware issue?

I did the same, buying a Wififofum and try it. When I turn it on it founds many APs and I sure can connect to my AP. but it loses connection after 3-5 mins, sometimes faster.. why is that? Later it's hard to reconnect, not everytime the APs are visible.. It works but not how it should :/ any help..?

What fixed My WiFi Which Just Stopped Working After I Left My Phones Battery To Die One Day. I Just Did A Force Reset Without The Sim Card In The Phone. And For Those Who Don't Know The Force Reset Is Both The (Home + Power) Buttons Ignorning The "Slide To Shut Down" And Your Phone Will Go Straight To The Apple Screen.

Now My Phone Wouldn't Find ANY And I Mean ANY Wifi Networks. Now Im Good Again.

I have had the same problem; iphone 3G won't recognize there is a wi-fi connection (even though I may be right in front of the wi-fi router). If it does finally connect in won't stay connected for longer than a minute.

THIS IS NOT A HARDAWARE PROBLEM! I already took my iphone to the Apple store and they gave me a new phone, but the new iphone replacement is doing the same thing.

Things I have tried on both phones to gain wi-fi access include:

1) turning the phone off and on (works temporarly, but the phone won't stay connected or often continues to show the loading icon forever)
2) turning wi-fi off and on
3) turning airplane mode on and off
4) locating the wi-fi by name (doesn't recognize the connection)
5) reset network settings
6) delete all the contents on the iphone

NOTHING WORKS!! I have not downloaded any new applications or changed anything within the memory. This seems to be a software problem...

What I want to know is when can we expect a fix from Apple? I'm so annoyed with my iphone that I'm about to toss it aside and go back to my old PC-based smartphone...

Alas, I have the same problem. I am on my 3rd 3G iPhone. 1st phone silent switch failed (within warranty). It was replaced. Replacement phone failed 3 months later, this time out of warranty, again silent switch. I took it to Apple store. despite being out of warranty they replaced it for me. I have the 3rd phone 3 weeks and now the Wifi has stopped working. It came with 3.1.2 loaded.

Given the amount of posts, this to me does not appear to be your typical 'random' problem.

I have tried:

- All the reset steps (network settings etc)
- Full restore (twice)
- On/Off
- Freezer (Yes this worked, for a time, then wifi went again)
- Leaving the phone off for a period of time.

Apple need to get their act together here and release a fix or a workaround.

An iPhone without wifi is akin to a Ferrari without an engine. Nice to look at but otherwise useless.

Given my experience I would caution anyone thinking of buying an iPhone now.
Hardware, software issues occur, no big deal, but Apples lack of response
and apparent unwillingness to acknowledge and address these is a huge issue.

to j_mike:
it helped me - i made a force reset without sim-card, after that reset network settings and can now connect to the routers at home and in the office. Will see, how long i will have WiFi 🙂

I have the same problem with my iPhone 3G which I purchased back in January. Everything was okay until I upgraded to 3.1.2 when I could not connect to Wifi anymore.
I've tried all the tricks and suggestions in this thread and none work.
I did bring the iPhone to the Mac store though, and to my surprise they simply did a scan on the device, which took about 2 minutes, then they immediately gave me a brand new iPhone as a replacement.
I'm really satisfied with this kind of service.
Thanks Apple!!!