iPhone 4 cannot connect to home Wi-Fi

I now had the chance to test other wifi networks.

It works like a charm with my university network and another private one.

I assume its a problem with the network you were in when you updated to 4.3.3

My advise is to not downgrade your routers, just wait for a fix and keep this thread alive..

If it is working fine on other networks the problem is with your router, not on the iPhone. No future update will "fix" your problem, start with resetting your router, then check to see if the firmware is up to date, etc.

Or would you rather have them release an update that makes it work at home but not at your university and other hotspots?

I've got the same problem described above. After 4.3.2 my iPhone stopped connecting to my home network - will show bars in the Wifi settings tab, but won't connect with the previously working password. My ipod touch and my brand new (arrived this week) ipad both connect to the network no problems. So it's not an outdated router problem. Also, my router is from my internet provider so I can't just "buy" a new one!!

I should have known better by now but I forgot to google before updating the iOS. 3G Works fine but I cannot connect my iPhone 4 or iPad 1 to my home wifi. Mac and PC still work fine on the network. After updating my iPad showed 2 copies of my router, 1 with the numbers 12 at the end. My iPhone did not show this. After following the CultofMac instructions of forgetting the network, resetting, restarting the router12 network disappeared but i get sporatic connections. Sometimes it times out, sometimes it works but is really slow, sometimes I have to reconnect to the network. Please tell me you are working on a fix Apple? From now on I google before updating.

Hi, I think I solved the problem with my iPad 2....

I took it to work today and tried with the wireless network there, worked perfectly.

I realized that was something from my router that was making the problem.

I checked the settings on the router and the iPad, as the DNS server the iPad had the router's IP; it's a setting in the router called DNS Relay. Turning that setting off the iPad got the real servers ....and that fixed the connection problems. I have like 20 minutes without any warning from Safari or App Store; before that, the warnings started showing within a minute.

For me was a routing problem (I hope), the iPad couldn't get the IP of any server from the DNS relay.

Before the update 4.3.3 it was working fine, maybe the update have problems with this setting.

Ok I've read all of these threads I have an iPhone 3Gs and my connectivity to home wifi started at update 4.3.2 and now continue through 4.3.3. I am of the opinion that it is not my router, but the updates. I've tried everything mentioned except downgrading the Airport firmware because I'm not using that type of router. It's belkin54g through Comcast. However the same exact router through Verizon Fios, the Wifi at my university, ATT, and MacDonalds woorks just fine. I think we need to wait for our genius friends at Apple to figure it out and send out yet another update. What do you think?

Are you sure you have a Belkin router and not a Linksys? If it is a WRT54s and from Comcast you probably need to upgrade the firmware on your router then reset it. If your iPhone is working fine at all the other places you mention this would point at a problem in your home, not with the iPhone.

Oh come on, stop telling us its a router problem. The people in this thread all have different routers and hardware setups, but what all have in common is the fact that since the latest update their wifi is buggy. I ask everyone with wifi problems: when you updated to 4.3.3, were you logged into the now buggy network? Do you have problems with other wifi networks?

Hi Thanks,

No, it's belkin54g (Comcast) and it was working just fine before the two upgrades. I understand you're thinking, but if you're correct about the router's firmware being updated, that update would be in response to Apple's update, which I don't think is fair. This didn't just happen out of thin air, it happened when the iPhone software/firmware was updated. So I don't think we should all run around worrying about our routers, but just wait and see what Apple want's to do about it.

My problem is finally fixed. I tried all the suggestions, reseting network connections, updated firmware in both routers, updated iOS on both Iphone 4s and iPad, nothing worked. Then, someone suggested looking at the DNS relay. That was a clue. I have a Dlink 655 router with a powerlink access point broadcasting to our 7 acres plugged into it. When I really started looking at the settings, I noticed that there was confusion on the iphones and ipad. I set the wirelesss to Static, not DHCP, then entered the router and subnet settings, chose anappropriate IP address and I have had no problems with either signal since.

Sometimes automatic settings just don't work. Hope this helps someone.

So you are saying your iPhone works at Starbucks, McDonalds, the university, in fact just about anywhere else but your house so the problem must be with the iPhone?

How long have you had this router? Did a little checking and there have been updates released by Belkin for their various 54g routers, most to fix bugs and to bring them into full compliance with the 802.11g and n specifications. This has been a problem all device makers have with updates, if they update the firmware on their device to be compliant then they may have a handshake problem with routers that are not in full compliance. There is no updates for your router due to the iPhone update.

I am assuming you have tried Forgetting This Network on your iPhone, doing a reset, and resetting the router then trying again. If not, give it a whirl. Also update the firmware on your router if necessary:

http://www.belkin.com/support/article/?lid=en&aid=5947

If none of these things work call AppleCare, give them the information regarding the router you have and the firmware level and information from your iPhone, other devices on the system, etc. and get a case number. If you do not do this there is no way for Apple's engineers to know their is some problem with Belkin routers in your scenario and no way for them to fix it. Every iPhone user I know is having no problems connecting their iPhone to various routers (I've connected to 4 different ones today) so this is not a system wide bug that is affecting all iPhones. So give them all the information you can to find a solution.

Thanks for the suggestions. I've tried everything except resetting the router, but I think you have a point about the Belkin routers because this one is a bit old. If the reset doesn't work I'll definitely try a firmware update (a bit complex), but barring that I may just try to exchange the thing for a new one. I appreciate the time you took to look into the problem. Have a great day!

1. iPhone used to work fine

2. iPhone updated by Apple, now does not work

3. *ALL* other devices (many many) still work fine

4. Apple's Fault

5. No comment from Apple "we are working on a solution"

Period.

Hey,

I just responded to deggie and the only thing I hadn't tried was to reset my router and then reset my network settings in series. I just did that a minute ago and it worked. I don't know if it will work for anyone else, but for now I'm a happy iPhone camper. Thanks deggie!

You are welcome, let's just hope in future updates it does not cause your iPhone and router to go out of sync. Of course where I live lightning can cause the same issue, or I get the variant that it whacks my DSL modem, drops the speed to dialup and then I have to reset everything.