iPhone Wifi Unable to join Network

just a side note, - the hand-me-down phone that wont connect at home, "unable to connect" or "failed to connect". did connect for about 30min while i was on the train. so could be a loose antenna? don't know. seeing as it is out side its warranty, I'l open it up after I have tried mucking around with the router settings.

n.b. the wifi on the train is the only wifi connection it has been able to connect to after the update on the modem firmware and os.

I had the same problem last week ...

Thanks for your tips! 🙂 It works again.

You gotta check the following points:
Setting >General >Network : Enable 3G, Date Roaming " OFF" and Location Services " OFF"

By the way Setting > General >About : My network is different from my Carrier! actually it doesn't matter

have now tried suggestions from SWFIII and sindy, still no connection to the BT Home hub, latest firmware.

will a later update fix this? or is there a way to format the disk then reinstall? or is there a way to roll back the modem firmware?

I use 2 wifi networks (entreprise and home)

1) My entreprise network is silently joining by my iPhone,
2) When I came back to home, my iPhone always sends me a request to give my password !

I must shutdown my iPhone before trying to automatically join my home's network wifi !

It is really painful story !!!!

Similar problems for me.

Tried everything to resolve, including multiple restores but not the 'Freezer Trick'. Symptoms persist:
- Detects all nearby networks with good signal strengths.
- Unable to join networks with no security, or with correct password (connected to them successfully in the recent past/intermittently with these passwords)
- Other iPhone 3G users connect to these networks flawlessly.
- No entries in the blue arrow address sections.
- Connects manually perhaps once per two weeks: cannot determine why.
- When connected and functioning if I 'Renew Lease', the connection is lost and cannot be regained.

Hopefully there will be a breakthrough fix for this issue. I have trouble believing it is a hardware issue. I really don't want to send my phone back to Australia for repair/replacement - I would miss it too much!

We have 2 iPhones with Telstra Next G. I had my new iPhone 32GB 3gs for a few months and also got one for my partner only a few weeks ago. Mine lost wi-fi connection about a month ago, and hers about 2 weeks later from mine. Both have up to date software.

Same issue, it can detect my wi-fi network name but cannot connect to it, so i have to resort to using 3g to connect. Some days it does connect and most days it does not after doing the reset.

Sometimes mine will connect perfect full wi-fi coverage, but at same time hers will be unable to connect, or only have very low wi-fi strength unable to connect. ....Go FIG!

Hmmmmm re-inserting the sim card seems to have boosted the wi-fi signal to full and connects ok. Hopfully wont have to do this often, will monitor.

For the last six months the only thing that works for a short period of time is the "Freezer Trick". What a joke.

I have exactly the same problem described by nwobi, stuartjohnwood and others below. I’ve tried resetting the network settings also and didn’t work. It’s been almost a year since those posts. Has anybody found the way to fix the problem? I agree with them, it’s very annoying.

Just got a refurb 3G from 02 - same problem, now I've got to get to an Apple store for a replacement (will it have the same problem?), I've just spent a whole morning talking to Netgear/AOL/02 people (some of whom have very poor command of english) - very tiring.
Has there been no official announcement about this after all this time?

I am having the exact same problem as all you guys. tried everything and I wonder if this is a hardware issue ? if so what is it exactly that is not working ? is it the logic board ?

iphone - unable to join the network - Solved

Solved - Solved -Solved

I held my iphone touching the antenna of WIFI router, it connected to the router. I was able to use the internet in this position only. Moving away from router's antenna, internet does not works. At leaset now I can do some very urgent works on iphone without GPRS connection.
I was not able to use my wifi for last six months. Done everything that was already discussed in all the forums.

http://www.youtube.com/watch?v=xL7rItVFUeg

Hello, I had a complete failure of WiFi since the beginning with my 3G. I have tried all the possible recipes many times described here without success. BUT, once I installed iOS4 the problem is SOLVED. IT WORKS without problems. I have the WiFi back. GREAT!

Nothing seems to work for me, I updated to the iOS 4 but nothing still getting the same message unable to join network. 😟

I'm having the same problem as everyone else here. Went though Apple and did all they suggested and still no Wi-Fi. So as a last resort did the freezer method, it worked, for 10 minutes then back to no Wi-Fi again. Many people here have said that this is an ongoing problem, why hasn't Apple fixed it?? This is very frustrating, the only good thing is I'm seem not to be alone. If I find an answer that works for me I will pass it along.