iPhone 4 wireless network connects to my neighbors networks but not mine :(

If your iPhone is able to connect to every other wireless network you have access to except for your network, this leans toward there being a problem with your wireless network or router. If a problem with your iPhone, you wouldn't be able to connect to any wireless network.

Have you checked the manufacturer's website for your wireless router to see if there is a firmware update available for your wireless router that you haven't installed yet?

What type of encryption/security are you using with your wireless network - WEP or WPA2?

Did you transfer the backup for your 3G to your iPhone 4? If so, try resetting network settings on your iPhone first. This will erase all wireless network settings from your iPhone. If no change after this and you transferred the backup for your 3G to your iPhone 4, try restoring your iPhone 4 with iTunes as a new iPhone or not from your iPhone's backup.

Baloney - the release was certainly tested. Each release is tested by 3rd party app developers before being released to the general public. No such problem with my iPhone 4 since day one purchased on the release date with a number of different wi-fi networks I regularly connect my iPhone with. Some encrypted and password protected, and others not. If not tested, I wouldn't be able to connect to any of the number of wi-fi networks I have access to and regularly connect my iPhone with. If there was a problem with your iPhone, you wouldn't be able to connect to ANY wi-fi network including the network at the Apple store. And if a diagnostic check was run on your iPhone, it would have detected if there is a hardware problem with the wireless card or with something else.

I have 5 devices connected to this router. Nothing wrong with the network.

This does not answer my question.

+Have you checked the manufacturer's website for your wireless router to see if there is a firmware update available for your wireless router that you haven't installed yet?+

Strangely my neighbors networks are protected and need a password! So technically it should give me a incorrect password. But it does not.

Does this mean you don't know the password for your neighbor's wireless network - you are entering a random password and your iPhone is connected to the network which provides internet access?

Also now I tried restoring my device and lost my applications.

All apps on your iPhone should be in your iTunes library on your computer. If you have Sync Apps selected under the Apps tab for your iPhone sync preferences with iTunes which should be selected, after downloading an app with your iPhone the app will be copied to your iTunes library the first time you sync your iPhone with iTunes after doing so. This also provides for downloading an app with iTunes on your computer and installing the app on your iPhone via the iTunes sync process. This also provides for removing an app from your iPhone without deleting the app by deselecting the app under the Apps tab followed by a sync. To re-install the app later, reselect the app under the Apps tab followed by a sync.

All iTunes content on your iPhone including 3rd party apps should be in your iTunes library on your computer.

When restoring an iPhone with iTunes, the iPhone is completely erased first followed by the firmware being re-installed. After the firmware is re-installed, you are prompted to restore from your iPhone's backup (which is the default selection), or as a new iPhone or not from your iPhone's backup. Either way this must be followed by a sync to re-transfer your selections under the various tabs for your iPhone sync preferences with iTunes (with your selections under the various tabs for your iPhone sync preferences pre-selected when restoring from your iPhone's backup) or your selections under the various tabs must be re-selected when restoring as a new iPhone or not from your iPhone's backup. Either way, all apps that were on your iPhone should be in your iTunes library on your computer.

Since you must not have Sync Apps selected under the Apps tab, you can re-download all apps with iTunes that were on your iPhone before restoring that are not in your iTunes library on your computer
and you won't be charged again for a purchased app as long as you use the same iTunes account to re-download the app that was used to purchase the app originally.

Does this mean you restored your iPhone with iTunes as a new iPhone or not from your iPhone's backup?

It is certainly not a fact that the release was untested. If that were the case and is definitely a problem with the release, then every iPhone 4 owner would be experiencing the same including with my iPhone 4, which is not the case.

What error messages? You didn't mention any error messages with your original post.

And this still does not answer my questions.

+Have you checked the manufacturer's website for your wireless router to see if there is a firmware update available for your wireless router that you haven't installed yet?+

+What type of encryption/security are you using with your wireless network - WEP or WPA2?+

+Did you transfer the backup for your 3G to your iPhone 4?+

+Does this mean you restored your iPhone with iTunes as a new iPhone or not from your iPhone's backup?+

I am using WEP. The issue is I have several of my devices connected to my network. My sisters iPod, my niece's iPod, my iPhone 3G, my lap tops my wireless printer.

This answers one of my questions but it does not answer this question regardless if you have several other devices connected to your network.

+Have you checked the manufacturer's website for your wireless router to see if there is a firmware update available for your wireless router that you haven't installed yet?+

You have restored your iPhone 4 with iTunes as a new iPhone or not from your iPhone's backup and you get this error message - 0xE8003FFE when restoring or when syncing after the restore?

Since you are reluctant to check the manufacturer's website for your wireless router to see if there is a firmware update available for your wireless router that you haven't installed, try changing the encryption for your wireless network to WPA2 if your wireless router supports it. WPA2 is much more secure than WEP for starters which is important especially for any Windows PC that is connected to your wireless network.

What type of router r u using?

The iPhone tends to prefer recently added networks over old networks. Connect to your neighbors network, the drill in to settings and "Forget this network" You can also "reset network settings" which will remove all previously set networks. Then carefully connect to only those networks you want to be on. The iPhone will not automatically connect to any network it has not previously been on without at least popping a badge first (optional setting).

Now remember that many people never change from the default network names when they set up their wireless, but that will only be an issue if you come across a network name with no password.

Unfortunately, on the iPhone you can only "forget" a network while you are on it, or forget ALL networks. On a Mac (or PC) you can delete individual networks and manage the connection preference order.

The iPhone4 seems to have a serious wifi problem.
I experience extremely weak wifi signal with 2 routers (e.g. the apple airport express): have to be within 1 meter of the router to get signal! With 1 other router the signal is a bit better: a range of about 10 meter.
The same iPhone had excellent wifi reception with IOS4.02: at least 10x the present range. All the above happened after I upgraded to IOS4.1.
Apple, do something about this bug!

See also other discussions:
http://discussions.apple.com/thread.jspa?threadID=2551019&tstart=60
http://discussions.apple.com/thread.jspa?threadID=2515226&start=15&tstart=60

Resetting, Restore, Restore DFU mode,... all this doesn't help. Apple give us back 4.02!

S.

No such problem here. Wi-Fi range excellent - better than my original iPhone and 3G.

If no change after resetting network settings and restoring your iPhone with iTunes as a new iPhone or not from your iPhone's backup, your iPhone has a hardware problem. The iPhone includes a one year warranty.

I am sure you have checked this, but just in case... Are you perhaps using MAC address filtering allowing only equipment registered in the router to connect at router level? I am using this feature for extra security. Just my $0.02...

If the iPhone 4 connects to other networks both open and encrypted (WPA, WPA2) then it's an issue with the way you have entered either the settings on your iPhone or have set up your wireless router. It would help us help you if you provide us with more information such as how you have set up your WLAN configuration and what the manufacturer name is for the wireless router as well the model number. These two links may be of use to you http://www.apple.com/ca/support/iphone/wifi/ and https://expresslane.apple.com/

I am always prompted for my password on my iPad and on my iPhone.
DO not get prompted on my MacBook Pro or the wife's MAC Book Air.


Using WPA2-PSK (AES) + Individual Device Authorization (aka WPA2 Personal)

no offense op but just because you have 5 devices connected to a wireless network doesn't mean there isn't a problem with the network. I am a network engineer and I can tell you that for certain without a doubt.