iPhone wifi not working

We just got three iPhones 3G on the family plan. The other two have connected to our fast home network with no problem. My iPhone doesn't even see the network! I've tried resetting, restoring, removing the SIM, etc. Most of the advice on the forums fixes the networking problems when the iPhone detects the network, but just won't connect. Mine doesn't even detect it. I know everything with the router is set up properly because the other two phones found it and work fine.

Don't think this is related, but my phone was also the only one of the three to not "port" our numbers from the other carrier. The other two ported within an hour. Mine took 2 days and I finally called tech support to get help, and they fixed the issue.

Otherwise, these phones have exceeded our expectations, love them! Thanks for any advice on what to try next!

My original 8G iPhone running the newest software worked great until this morning.

Now it does everything fine except it cannot detect Wi-Fi networks. My wife's identical phone and software works fine and connects automatically. Mine does not detect any network.

Sounds like the antenna or detector or something is broken.

Can this be a software problem, or does the phone need to make a trip to Apple-land?

You're not alone. I'm doing the restore via iTunes fandangle right now (a serious pain in the rear, by the way) in hopes of this working. Otherwise it almost certainly has to be a hardware issue.

The iTunes restore process is flawed. I plugged my iPhone in, backed it up, clicked the restore button as directed by this apple page:
http://support.apple.com/kb/HT1414?viewlocale=en_US
and when it was done restoring, I was prompted to restore the phone from a backup. So I did. Once it restored, iTunes wanted me to select a backup or a new iPhone - again. Selecting a new iPhone tossed the Sync settings out the window (along with all the music on the phone). Bad user experience.

Same problem here. iphone has been without any wifi for days. I've done several restores++ -no help.

Hey clopez787,

Does the iPhone have a Wi-Fi address listed in Settings> General> About?

If it says NA or 00:00:00:00:00 this article will provide the possible resolutions.
http://support.apple.com/kb/TS1559

You can also make a reservation to have a Mac Genius take a look at the iPhone here or call AppleCare.
http://www.apple.com/retail/geniusbar/
U.S. iPhone technical support: 1-800-MY-IPHONE (1-800-694-7466)

Jason

I have the same problem with my iPhone 3G, but only since upgrading to 2.1. After switching off Wi-Fi over night I was again able to see wireless networks, but only the ones with a strong signal. Connecting to a wireless network wouldn't work, though, and now the iPhone is back to not listing any wireless networks.

Has anyone on this post found a way to fix this problem yet? I haven't seen any posts since mid-September and this just happened to me. I have original iPhone and iPhone 3G. My original iPhone is just used as a Touch now since my phone service is on the 3G. For the past 1+ years I have had the original iPhone I have not had one issue with wifi connectivity. Now all of a sudden it can't even find a wifi signal at all. Kind of like the wifi is turned off, but it is on. My Powerbook and 3G are both connected to the wifi in my house with no problems at all. Do people think this is a hardware or software issue? Any luck bringing it in to a Genius bar at an Apple store?

i've got a similar issue. iphone can connect to my router, but only provides internet access for 10 seconds before dying. ip and DNS information are in the network connection information. i've turned off WEP and turned on broadcasting and it doesn't help.

So the Apple Genius bar was useless. They barely looked at it and said I could pay $200 to replace my phone with a refurbished one. I had a feeling that would be the case since it is out of warranty.

Hey clopez787,

When you restored your iPhone did you recover from backup or setup as new? Try restoring and setting up as a new phone.

If the issue persists after restoring and setting up as a new phone, it would be best to have a Genius at a local Apple Store take a look at the iPhone. They can test it with one of the open Apple Wi-Fi networks.

Jason

I think iphone 3g without wifi is crap!
Now it's proven useless phone of the decade!

I had the same problem - iphone 1st gen would not find wifi at home or at work - it would not find any networks.
Took it to apple store and they did reboot, etc.

The genius said he had never seen this before and he replaced it with a refurbished phone - I had two months left on warranty.

This issue started for me last night, I was out at an Oasis on the tollway saw wifi just fine when I arrived at home while walking the dog I always surf my forums I noticed no wifi. Didn't pay attention until later at night that it wasn't picking it up checked computer was picking it up. Still nothing on Iphone restored firmware, reset network settings with not luck. At work there are two other iphones one 2g one 3g they were able to pick up the local locked signals but mine just continued to search I have an appt with a Genius today. Will post update. Warranty good until Dec 8th.