Strange WiFi problem on iPhone 3G after 3.0 update

My some problem after upgrade on OS3 is resolved:
Settings-General-Reset-Reset Network Settings
Now WiFi working correctly

Same trouble here .... My WiFi get very unresponsive or plain non existant since the last upgrade 3.0...
What the apple tech have to say about it...

I am having the same issues as everyone here does. Still can't get my wifi to work again. I have downgraded to 2.0 and thinking it would clear this wifi issue up. Guess what?? NADA!!!!. I still can't get the wifi connection under 2.0.. So, Apple just bricked everyones wifi when they upgraded to 3.0!!!!. GOOD JOB!!!.. JOBS!!. There going to be alot of iphones with dead wifi's for sale on craiglist and EGAY!!!!! BRAVO APPLE VINEGAR!!!!!.

I´m also lost, nothing about solution...and I´m satyed whitout WIFI...I can´t imagine use a Iphone whitout wifi...Apple help us whit this problem....

Olavo

How did you downgrade????

Yep. Me too. I feel bad cause Ive convinced a few people to get an iPhone

My relationship with Apple will prob end with this lack of support. It has been absolutely non-existant.

Mine was working until today. Now I get no wifi. I've tried resetting the network but it doesn't change. I'm at work and 2 other people with iphones can connect just fine. I guess I'll be heading back to the ATT store...

So will mine. This whole incident is so rediculous. I've just called the support, and they mentioned that my last few calls where not made...
Here I am with my iPhone and no connection to my existing wirreless network...

Apple. Taste the sour apple of an update :o/

Well after upgrading to OS 3.0 my Wi-Fi is Grayed out and obviously my Bluetooth its unavailable!!.

So I downgrade my FW to 2.2.1 and guess what!!!!... my Wi-Fi and Bluetooth are not working eather!.

So I hope you can find a solution for this problem bcause there are a lots of people with the same issue!!. I still don´t know if this is a software or hardware problem. I hope is the first one.

Yes, I can confirm that that downgrading does not help, althought my wifi is not greyed out (I still see networks) but I cannot connect to any... AGAIN I AWAIT APPLE's SLOW RESPONSE!

This is so depressive - my friend just called with a familiar problem: "My wi-fi is not working after 3.0 update, it's greyed-out, no software reset or restore helps...". There is a whole thread on Croatian Mac User Group forum about this...

The thing is that I love my iPhone so much that I can forgive him anything and I'll never buy another phone, but I find hard to forgive Apple the lack of support in Europe. Mobile companies staff knows nothing at all, they even can't diagnose is it software or hardware problem, they only repeat the same sentence as drones: "You'll get a new one in up to 4 weeks if it's hardware problem."

And there is no replacement phone or any way to speed things up. Imagine my embarrassment when people that I talked into buying one call me and say: "Yes, the iPhone is magical, but now it doesn't work and now I must wait 4 weeks for another..." 😟

Is there any news about 3.0 patch that will address this Wi-fi issue?

Looks like I found a pattern with wifi not auto connecting after going to standby. If I plug power to iphone, wifi stays up once connected or after waking from standby mode.

If iphone is manually put into wifi mode with no power plugged, wifi will disappear upon waking from standby mode.

Hope this helps guys...Apple, please fix.

Same problem here: after 3.0 update wi-fi doesn't work anymore 😟

Just thought I'd add my name to the list of people having problems with this (not that it will do much good!)

My story:

I was running the iPhone 3.0 beta (from the official source, not a hack or dodgy download!) and I was fine through beta releases 1-5. I then got the final stable release about 2 weeks before the official release (day of the WWDC keynote) and it was fine at first, then it started to lose my wifi network (Apple Airport Extreme). Then a couple of days later, wifi was greyed out, just like some other posters have mentioned.

I took it in to my local genius bar, and the genius couldn't explain it - the software diagnostic didn't show anything up so he replaced the handset.

Took it home, 2.2.1 picked up my network fine, so I then grabbed the 3.0 release through iTunes and did a complete restore.

Wifi was working perfectly for about a week, but this last week, I noticed it was dropping the network and I would have to go in to the wifi settings and re-select the network, then two days ago it wasn't picking it up at all. Decided to sort it once and for all this morning, another full restore, reset network settings, but still it can't even see the Airport, when I select WiFi networks, it simply isn't listed, and I am sitting right next to it.

My iMac can see that network, plus another 5 networks from my neighbours, as can my Macbook Pro. My wife's Windows Vista machine can also see the same networks. The iPhone does not see any of the networks, when it used to.

I'm by no means an expert in the iPhone software/hardware, but it occurs to me that 3.0 might actually be doing something with the wifi card that is causing it to break - possibly overheating it? I don't know...

I am somewhat relieved to read that I am not alone in this problem, and it appears to be affecting the 3Gs too from what I've been reading.

Sorry I don't have any answers to help anyone, but it looks like another trip to the genius bar for me 😟