Wi-fi issues with new 3.1.3 update

After two hours of usage back to the same problem. 😟

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Message was edited by: SWFIII

I may have an answer to this one and it may not be the iPhone at fault.

I use a Netgear WNDR3700 gateway router. Netgear have just posted a new firmware update that includes this fix

"•Fixed: “iPhone keeps asking for wireless passphrase” issue."

according to Netgear's FAQ for this firmware update.

So it may be worthwhile pestering your wireless provider for a fix too.

Thanks for your reply.

I tried everything. Setting up as new device, resetting everything - WLAN doesn't work. I tried 4 different routers for now with and without encryption. still no luck.

I think it is definately broken. What can I do? I'm out of normal warranty, but I think this is apple's fault ,but they don't offer me any senseful choice of contact on their website. Any hints?

After several days...

iPhone: settings-->general-->reset-->reset network settings.

Thanks to Allan Sampson!

My 3G wifi worked fine with 3.1.2 and before. After upgrading to 3.1.3 I get "Unable to join the network _" to any and all networks I try (not just my own home) even though I'm picking them all up with the wifi strengths I've been used to. So I'm confident it's not a router issue or an antenna issue. Tried the network settings reset that's been mentioned. No change.

Kind of wary about a restore being a big timewaster but I guess I have to.

The restore might work, but doubtful. The firmware has probably jacked up the WiFi until a new firmware is released.

Contact Apple at apple.com/feedback and let them know. if enough people contact them we hopefully will get a solution.

Same issue: upgraded to 3.1.3 and wifi now fails.

Tried "Reset Network Settings"; networks are
initially detected but immediately lost.

Tried "Restore" and "Set up as new"; networks are
initially detected, work briefly/sporadically
but are then lost.

Only solution: "out of warranty replacement"

I too had the same problem that a lot of people state - after the upgrade wifi was not working.
I could see and join the wifi network no problem but browsing the internet, etc. did not work.
I could turn off wifi and browse the internet via 3G no problem.
I reset the network settings but this did not work.
I released my DHCP address in the router and clicked renew on the phone and got an IP but browsing, etc. still did not work.
I set a static address in my iphone and everything works fine.

Those who are having a problem may want to try to set a static address in their iphone.

Thanks, I tried your suggestions but no luck.

Apple says the failure of the "set up as new" procedure
unambiguously points to hardware failure. I am not sure
whether the upgraded firmware is down-rev'd in this
process (the phone still shows 3.1.3).

AT&T says its Apple's problem.

I've bought an iPhone 3GS/16 and I've got the sluggish wifi connection problem. At home I have a TimeCapsule as base station.

I've SOLVED the problem disabling the "anti-interference" feature of the TC (I guess any Airport base station has the same setting). That feature is accesible pushing the "advanced" settings button in the wireless tab.

At work I can hook to various wifi networks. Some of them have the issue, others don't. Anyway, I don't have any access to the settings of those routers, so I can do nothing at this time.

Thank you so much for this info.
I have called Apple, they said might be my phone's problem, cause my warranty expired.
I did what u say, it works.
Thanks again.

well, after 10 mins, unable to join wifi again.
followed the steps, but it seems not working.

I have the same problem even after resetting the network 2 times. Does anyone have the answer? I could connect to my home wifi effortlessly before the upgrade.
I too get asked for a password. There has never been one assigned as my iphone always connected automatically. HELP!

My Wifi got lost after upgrading to 3.1.2 and continued to be broken after upgrading to 3.1.3. Every official steps to recover functionality did not work also a complete restore changed nothing.

As some told me this would be a hardware-issue I tried the "freezer"-trick and it did not work either.

Then I got lucky when a friend told me, he could authorize my iPhone under his Dev-Account. He wanted to testdrive the app he is developing under iOS4.

Then - the magic happened: right after installing iOS4 GM WiFi started working again like a charm. It worked for over a week now. Until today:

After syncing the phone with a PC and pairing the library to my iPhone, WiFi stopped working again and now I cant get it to connect to any router as before.

Anybody got a clue what happened here???