Q: Wi-fi issues with new 3.1.3 update

Thanks, it worked for me. Now I have my wifi back. Will see how long, but now I'm happy!

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!