Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
A few ideas

I stumbled across this thread after resetting my passwords. Just making my router more secure etc as I live in a congested neighboorhood.

I am using an Apple Airport Extreme basestation with RDS to an Airport Express unit. I am using WPA encryption of course because this is a MUCH more secure wireless method. You might remember WEP being abandoned years ago in the lead up to the Winter Olympics because of this insecurity.

If you are stuck in WEP hell then you'll have to deal with the hexadecimal mess. Remember (going off of memory here) hex only takes alpha number A-F and numbers 1-8 so watch what you enter as your password!! If you are erroring out in the password phase its more than likely a HEX issue or an issue with your router config or hardware. Especially so if your iPhone's wireless works fine off of other networks. 'Nuf said.

OK so I was having problems all of a sudden connecting to the wireless network. I had no problem before when my password was 8 character (WPA) but now I went to a 20 some alphanumeric password. iPhone wouldn't connect. Interesting that my shorter 8 digit password worked fine... so I'm just theorizing that there must be a threshold on this. If I was better at binary I could probably tell you a definate on this but I'm guessing it's probably 16 characters. I changed the password to a 15 character password (BTW this was an arbitrary number that popped into my head) and lo' and behold it worked fine. This is most likely a binary thing. So try shortening your password and see how that goes. It should be noted that I've tried connecting to a long password network at a friends and had the same problem. Didn't feel like troubleshooting it as their network sucked and I didn't want them blaming everything on me when all I did was tweak one little thing...

Also as a side note I noticed some of you were complaining about the phone not connecting to wireless... and staying on Edge. Personally I notice mine disconnects from wireless when not needed. Makes sense if you're trying to prevent the battery draining wireless from killing the phone. Smart move on Apple's part IMHO.

But if the phone continually stays on Edge given some of the replies I read I wonder if the problem isn't on the router side. (While this is probably a firware or software problems the though occurred.) The problem might be packet collision. Have you tried tweaking the channel of your router? Remember 1, 6, & 11 are main channels. The other ones are in between those. (Another reason for Net Neutrality anyone?). Chances are you might have the defualt settings and so does your neighbor... his router might be kicking the dust out of yours. Most people unwisely don't change this... or their default password... you might want to change that too! :)

Hope this helps!
 
Reboot it!

My iPhone won't connect to my encrypted Wifi it will connect to my neighbors unprotected wifi but not mine I put in the pass word and still no dice, also tried putting a $ in front of it but still no good any help appreciated I called apple and they haven't been of help.

Thanks Steve

So after a few annoying minutes with my iPhone being unable to reconnect to my NetGear Wireless router, I had a "D'oh" moment and just power cycled the router. The iPhone connected to it on the first attempt once it was back up. Remember your Windows Networking basics - if at first you don't fix it, reboot it.
 
I know this problem has been addressed in countless ways since it came up over the past year, but I have to say after trying several ways to fix 'connected but not really due to DNS problems' wifi, only one seems to work, and that one is very temporary.

To fix my home wifi issue (it seems to work more reliably elsewhere, but still flakey sometimes) I change my IP manually to something out of the DHCP range. Other methods, such as using WEP and a Hex password, using only one DNS, using OpenDNS, rebooting everything a billion times, using no encryption on the router, using WPA on the router etc don't work at all. And the IP change only works until the phone goes back into 'sleep' mode. Pretty annoying but livable I guess...do you think this will ever get fixed? Is the problem limited to unlocked phones? You'd think it would be something fixable if every other device on my home network works fine. PC laptop, iMac, Wii, PS3, PSP, DS... But not the iPhone :(

Any other ideas to possibly fix? I'm not holding out much hope at this point, but if I get a reply that helps I'd be thrilled.
 
iPhone 3G Suddenly Won't Connect to any WiFi

I've read so many reports of this happening to other iPhone owners and have read hundreds of fixes. None seem to work. I have reset, erased and restored, manually set DNS IP and lots more. Nothing seems to work. The phone will locate and acknowledge WiFi wherever I go, but when I try to connect I get a pop up that states "Unable to join the network [whatever the network is called]" with a Dismiss button at the bottom. I even went to the Apple Store and they tried to get it up and running with no success. They told me I could back up the phone and try a special DNS reset, which was kind of hard to do, if I recall. I can't really remember how the guy said to do it. Again, I cannot access any WiFi at home or anywhere and this just happened suddenly. Any new ideas as to what I might do to get this thing using WiFi again? I'm game to try anything I haven't already tried.

Dave
 
The fix

I had the same issue (verizon iphone4)... Use other and add your network manually... That's what worked for me.
 
Possible solution...

I had the same problem. The wifi network appears on the iPhone, and it claims to be connected, but cannot be used as the iPhone doesn't get allocated a valid IP address on the network. I have an iPhone 4 and an extreme base station. After many resets and following suggestions on various forums, nothing worked.
It appears that the problem is that the Airport Extreme is failing to correctly allocate a private IP address to the iPhone using DHCP - an automated connection protocol. No idea why this isn't working, it ought to be straight forward - possibly a bug in the latest iPhone iOS?
The way I solved it was to use the Airport Utility to change the connection setting on the airport Extreme from automatic allocation of IP addresses, to only allocating a range of IP addresses from 2 to 200.
On the iPhone I then change from DHCP to Manual and set the IP address to xxx.xxx.xxx.201 (where the x's are the private IP address range chosen by Airport Utility). If needed, another device could be set to 202 etc.
All very ugly, sorry, but at least it works if nothing else does. Best of luck. I hope Apple finds out why it is happening and fixes it, it seems a lot of people are also struggling with this.
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.