Wi-Fi & 3G Data Connection Problems Surface After iOS 4.3.3 Update



A number of users are reporting problems with Wi-Fi or 3G data connections after upgrading their iPhones to iOS 4.3.3. I’ve encountered the problem myself on 3G and a friend called me the other day to complain to me about the problem on both Wi-Fi and 3G. He was pretty frustrated about it and I cannot blame him since it seemed to come and go for him.

You’ll notice the problem manifest itself whenever you try to access a network resource and the busy indicator to the right of the carrier signal label seems to get stuck and nothing happens – mail isn’t downloaded, a web page doesn’t load, etc. I haven’t noticed the problem on my iPad 2 nor have I seen people complain about it happening on their iPads.

I encountered the data connection problem on 3G and Wi-Fi after upgrading my iPhone 4 to iOS 4.3.3, but the problem didn’t return for me after I followed the troubleshooting tips below. Try each one working your way up to the last one, but don’t do all three unless you have too. Test connectivity after each one. If none of these work you can try some of my other tips or head to the Apple Store for a Genius Bar appointment.

Try them out for yourself and let me know how it works out for you by leaving a comment.

Option 1: Hard Reset Your iOS Device

If your iOS device is not connecting to Wi-Fi or 3G after updating to iOS 4.3.3 you might try a hard reset by pressing and holding the Home button and the Sleep/Wake button until you see the Apple logo then immediately release both buttons.

You should ignore the red slide to turn off button that appears, continue to hold both buttons, and wait for the Apple logo to appear.

Try accessing Wi-Fi or 3G again if the problem persists try option 2 below.

Option 2: Forget Your Wireless Network

  1. Launch the Settings app.
  2. Tap Wi-Fi.
  3. Tap the blue circle with the white arrow on the network you want to forget.
  4. Tap Forget this network.
  5. Tap Forget.

Now attempt to connect to the network you just forgot and see if the problem remains. If it does try option 3 below.

Option 3: Reset Your Network Settings

  1. Launch the Settings app.
  2. Tap General.
  3. Tap Reset.
  4. Tap Reset Network Settings (if prompted enter your PIN).

Your iOS device will reset the network settings to the factory defaults and your device will reset. You will have to reconnect to any Wi-Fi networks you previously connected to as needed.

  • Chris Wong

    I have had this problem since updating to iOS 4.3. At lots of times i have to switch to Airplane Mode and turn it off and reconnect to cellular network in order to surf the network again. Sometimes i even stuck at EDGE and have to restart the whole phone in order to get 3G network again.

  • Nepodevil

    I am also having this problem, I updated my phone on Monday. I make a habit of waiting a few days to see if things like this turn up later. I suppose I should have waited a few more days before updating.

  • Franks96

    I have the same problem I updated my Iphone 4 last night to iOS 4.3.3 and I try everything and nothing works I am on the phone right now with ATT and apple a the same time and they don’t seem to have a solution I will post again if I get a solution

  • Someone

    Ran into this problem on 2 work phones.
    Total Pita

  • Alexander530

    I updated both my iphone4 and ipad last night, and both seem to be working just fine.

  • Scad

    Same problem here with iPhone 4. Safari is usable for about 5-10 minutes, then I need to toogle Airplane Mode once to reconnect to the network.

  • Scad

    I now found out: I have an internal webserver (Mac mini) on my LAN. As soon as I get the Wi-Fi connection issues with my iPhone, I have tried to reach the internal web server with Safari – and this works. So it seems to be a routing issue on iOS 4.3.3. Not a Wi-Fi. one!! The Airplane mode then resets this routing issue. Can anyone confirm?

  • Robert Norris Hills

     Androids never had this issue.

  • Schwart9

    I had lost my 3G on my iPAD. Step 1 solved problem. Thanks!

  • Chris Carden

    I switched to Apple from Windows Mobile to get away from configuration nightmares like this.  This has been so frustrating.  3 devices (iPhone 3, iPhone 4, and iPad 2) all have this intermittent WiFi problem, all with iOS 4.2.  Thanks for the recommended steps, David.

  • 333dano3

    It seems that some websites I can access and some I can not.I can access everything on 3g but only about 60% on wifi,any suggetions? 

  • jbs

    Is there anywhere where we can report these issues?  Is it 3GS only?  why only some iphones.  All I know is this is killing my productivity both with the phone working and searching for solutions.  Any guidance is helpful!!

  • jbs

    Is there anywhere where we can report these issues?  Is it 3GS
    only?  why only some iphones.  All I know is this is killing my
    productivity both with the phone working and searching for solutions. 
    Any guidance is helpful!!

  • Swiftwlf

    I got a 3Gs too, check your APN setting, enter the correct carrier info, it save my day, shame on apple to release such a buggy “update”, I ‘m lucky that one of my buddy is an IT expert, anyway I’m going Android. good luck pal.
    for those who cant open previously installed apps, use itunes to install a new free apps to your iphone, run the new app and all apps should run again. David (greetings from Hong Kong)  

  • Zummuz

    Steve jobs should just share his ideas. He has some sick sense of controlling everything, including his already sold devices as he is still the owner.
    I payed for my device I should own it. Upgrade, downgrade, jailbreak – no matter what. I’m talking about my spend money, I didn’t borough the device from steve.
    You americans should take positions about this pervert sick of ownership. If you bought your device off course.

  • Dan Becman

    I live in Brazil and I’m having the same issue as Chris Wong. Whenever i lose signal or even to into EDGE, after i recover 3G reception i have to either restart the whole device or turn airplane mode on and off, otherwise the busy icon appears but nothing loads / refreshes.
    I think it’s safe to say it’s an Apple problem, not the carrier’s. Is there any position from Apple on this matter? I assume they wouldn’t want this many costumers buying devices from other brands.

  • Myname

    Check this not even one official response ;)

  • Sun_n_moon

    Accessing mails and applications have slowed considerably after installing 4.3.3. Wish there was a way to revert to 4.3.2.

  • Dan Becman

    I’m assuming it’s some compatibility problem, considering not all users are experiencing this.
    Anyone hear about apple’s acknowledgement of this matter?

  • Guest123

    ill have to take the political view on that. i dont see it your way or the opposing.

  • RBN

    I just updated my iPad 1 to iOS 4.3.3. and wi-fi was no longer able to connect to my home network. 

    I tried everything suggested, like forgetting the network, hard reset and restoring.  They had no impact on the problem.

    On my Linksys WRT300N router, I changed my wireless access point’s NETWORK MODE from WIRELESS-N ONLY to MIXED.  That simple change allowed my iPad to once again connect to my network.  Maybe that’s something Apple will fix in the next update.

    It may not solve everyone’s problem, but if you’re still having trouble and you haven’t tried that, it’s worth a shot.

  • SocialExpert

    Nice news what about google +1 services?

  • Lamartiny

    DBecman, I live in Brazil as well and I just ipdated from my Ios 4.3.2 to IOS 5 Jail break and unlocked and I now that got worst, now I can´t acess at all my 3G connection from Claro. It appears on the screen the 3G network but when I never can really use it, cos always say Safari couldn´t open the page cos you are not connected to Internet.

  • Helen Thames

    I had the same problem with my new iPad, the wifi range was really poor. After looking for a solution to this issue for quite some of time, I was just about to give up, and RMA the iPad. I did a bunch of research came across WIRED magazine and found a extensive and detailed review of Pong Research cases http://www.pongresearch.com These guys make a very special case which has a built-in antenna in between its layers, which redirects and boost the signal and range of your new iPad, iPhone and other devices. This solved my new iPad 3 poor wifi range and now as a result, I’m able to connect to my router from further distance without a problem at all. And that’s not all, one of the features I like the most is their Origami Cover which folds in 5 different positions while still maintaining the sleep/wake function.