No Wifi after iPhone 3.1 upgrade

Well, add me to the list.

I have a IPhone 3G and never had issues when connecting to wifi before the upgrade to OS 3.1. Now my IPhone can't see any wifi network. Even it does, it will show the error message "can't join to the network".

I live in France, not like you guys can arrange some trips to check your IPhone at Genius Bar.

Apple, please do something and do it fast!!!

Message was edited by: linsergio

I had the same thing happen to me and my husband's iphone that was also upgraded to 3.1 has no problems at all

Just wanted to add my name to this topic.

I'm currently with the 'No Wi-Fi' greyed out option. Sometimes when I reboot the phone I manage to get the options available again to connect to a network, but still can't connect to anything. (and I'm tired of rebooting to see if anything works)

When it works I've also tried to manually connect to the wi-fi network, but that doesn't work either. It used to work fine and I've not reconfigured anything on the router, but I did upgrade the phone to the latest firmware.

I too am having this issue. I fixed it using the autolock never setting... so far it is working!

I have a brand new iPhone 3GS 32 GB with 3.1 software. It rarely automatically connects to my D-Link wireless G network that my 1st gen iPod Touch can connect to first time, every time. It can take up to 20 manual tries to get the iPhone to connect. Statically defining the IP address in the router's DHCP table does not help.

My setup is an AirPort Extreme acting as the DHCP server in N-only mode and the iPhone connects to a D-Link wireless G router with DHCP disabled. The two routers are connected via switched gigabit Ethernet so there should not be any significant latency problems.

I'm actually surprised by how fast the "Unable to join …" message comes up (1-2 seconds). It doesn't seem to try very hard to connect. Once connected, it stays connected with good performance until I sleep the iPhone. This appears to be a DHCP negotiation problem that is NOT helped by statically defining an address. If so, this should be a simple software fix. Of course, we might be waiting a long time before 3.1.1 comes out.

As an experiment, I changed my AirPort Extreme to be b/g compatible. Now the iPhone automatically connects 5/5 times. I don't want to run the Extreme at that setting though because it slows down the N devices.

This makes me even more convinced that Apple can simply issue a software update to correct this problem as the hardware operates fine. Hopefully they will test with other router manufacturers.

I do not know about the rest of you, but after AT&T released the MMS carrier update and installing the update seems to have resolved my WIFI issues. I am now able to connect to any wifi. I use the Time Capsule with built-in wifi at home. Also I have all the a/b/g on.

Not me, I have a 3G, running 3.1, and the MS upgrade. No WiFi connectivity.

Dammit. No wonder AT&Ts network is slow, no one can use WiFi.

--Sean

What's frustrating for me is that the water damage indicator got tripped somehow and the warranty doesn't cover it. The iPhone actually has never been in contact with water and everything on the fine except for the WiFi. So I can't get it replaced, and the "genius" at the apple store thinks I water damaged it myself. So there's really not a whole lot of options for me since WiFi is a really big feature on the phone and I can't even get it fixed due to the water damage indicator.

add me to the list.

I have same issue since I update my iPhone to the OS 3.0. After I restore my iPhone it shows "no Wi-Fi" in Settings.

I believe the problem is caused by updating the baseband firmware 05.11.07 together with v3.0. but I didn't find any solve issue from Apple so far.

currently, I stay in Taiwan. there is no Genius Bar to help me. I can not stand to use my iPhone without wi-fi.

*Apple, please do something and do it fast!!!!*

Add me to the list too.
My gear: iPhone 2G, can't connect WiFi since upgrade to 3.0.1 and still no hope at 3.1. I've tried all those methods as suggested by Apple on the web but my iPhone just can't connect to the network. However, my iPhone can show WiFi address under "Setting=>General=>About". I'm sure this is not a router issue but there might be crashes between old wifi chipset with new firmware. Just hope Apple aware of this problem and release new firmware to fix this bugs.

Unfortunately my phone has passed warranty already and thus I can't arrange replacement/repair with Apple. Poor me.

Message was edited by: VictorHK

I'm having the same issue. My MacBook Pro still connects to my wifi network so I'm sure it's an issue with the iPhone 3.1 update. Pretty frustrating.

Same issue for me. I'm also unable to connect to any WiFi networks. I can turn on WiFi (Settings -> WiFi -> On), but the iPhone is not actually able to find any networks, so none of the troubleshooting tips at this link are any useful ( http://support.apple.com/kb/TS1398).

I've already attempted to Reset Network Settings, Reset All Settings, restore from iTunes -- nothing works.

I've even tried to manually join the WiFi networks, but I get an error indicating that the phone is unable to scan for networks. My MBP finds these networks just fine, and the iPhone WAS able to until this update occurred.

Though, my issues seem to have started with the MMS update:
http://discussions.apple.com/thread.jspa?threadID=2176364&tstart=0&messageID=103 17263#10317263

Message was edited by: Brian Emmett

Same problem with wi-fi.

Weak weak signal, practically unusable.

It's shame that a device built for connectivity has this kind of trouble.

Unbelievable Apple hasn't solved this problem yet, I read thousand of posts about this matter without any efficient resolution.

Same issues here.. wifi is totality unstable. Only had the phone for 3 days. Everything was fine until I did the update through iTunes. Hopefully we'll see a fix sooner then later this is very annoying.