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iOS4 on 3GS - No WiFi

130443 Views 268 Replies Latest reply: Jun 7, 2012 10:43 PM by RockNRollSam RSS
  • KingDude Calculating status...
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    Sep 21, 2010 1:54 PM (in response to Wrinkly Pea)
    Anyone know if 4.1 resolves this?
    MBP 13.3 2.26G, Mac OS X (10.6.2)
  • smurdoch Calculating status...
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    Sep 21, 2010 9:42 PM (in response to KingDude)
    The solution is to go to an Apple store and demand a replacement phone. They know that iOS4 bricks WiFi functionality for the 3G, you just need to push them.
    Windows XP
  • Somniu Calculating status...
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    Sep 22, 2010 4:25 AM (in response to KingDude)
    Well... 4.1 actually does seem to solve the problem for me! Or at least drastically improve it.

    Where with 4.0 I had to switch Wi-Fi off and on nearly every single time I wanted to access the web (and even more than once in some cases), now, I can't remember the last time I had to do it. I would say I did it once since 4.1 was out.
    iPhone 3GS, iOS 4
  • jmtz Calculating status...
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    Sep 23, 2010 12:54 AM (in response to smurdoch)
    I agree with you.

    I posted here before my problem and only after insisting I got a replacement (new) phone (via T-Mobile in the Netherlands and within 2 years warranty). Issue is solved in the new phone, I run now 4.1 on it and has no problems.
    iPhone 3GS, iOS 4
  • mugwamp Calculating status...
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    Sep 23, 2010 9:03 AM (in response to KingDude)
    KingDude wrote:
    Anyone know if 4.1 resolves this?

    I hoped and prayed 4.1 would fix our wifi problem (I say we: about 8 of us at my company updated to iOS4 and wifi access at work instantly stopped).

    No dice. 4.1 may even be worse (and really, they made no claim it would do anything for any wifi issue).

    I even went as far (regretfully so) to wipe my phone and restore as new (loosing all my settings, game saves, contacts, etc) and nothing. No dice.
    3GS 32 gig, iOS 4, Wonky ios4 WiFi
  • jpharper999 Level 1 Level 1 (0 points)
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    Oct 3, 2010 9:18 AM (in response to Wrinkly Pea)
    I have been on 4.1 since it was released and my wifi just bit the dust...
    This is ridiculous. over 3 months. The issues with 4 appeared to atleast have been partially fixed for a short time but then came back with a vengeance. Apps crash, slow/sluggish response time from iphone, and now this....

    I have an appointment to work with apple representative tomorrow morning but wen this occurred, I had to post and see if there was anything we could do to correct this particular issue... Unfortunately it does not appear there is anything.

    Thank you apple for all the new features
    3G, iOS 4, Really in a BAD MOOD
  • DerCribben Calculating status...
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    Oct 6, 2010 5:59 AM (in response to Wrinkly Pea)
    I'm at least glad to hear that other people are having the same or similar issues as I am. FYI, I went into the apple store a few days ago and they gave me a brand new 3GS, I brought it home and updated the software and recovered to my old settings and I am still experiencing the same issues. I can log into my router (Cisco Linksys E3000) and get FULL bars on the reception indicator, but downloads are sluggish at best (a lot of the time the download will just time out on me), but as soon as I turn WiFi off, and it goes into 3G mode, what I was downloading INSTANTLY downloads (unless it's an app with over 20 megs, then if I ever want it to download I need to actually sync with iTunes). So, iOS4.1 does nothing to address this issue, and neither does getting a free, brand spanking, shiny, new "replacement part" iPhone...I'm definitely stoked for the day when/if somebody comes on here and says "PROBLEM SOLVED!!!"
    Lenovo T400, Windows 7
  • jmagg Calculating status...
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    Oct 10, 2010 8:13 PM (in response to DerCribben)
    I went to Apple store after trying everything on these boards (except oven and freezer). My 3G connected to the wi-fi network at the Apple Store immediately. I talked to the "genius" anyway and he gave me the same old crap (restore as new phone). I got home and it connected to my network. It worked all night last night. Today, back to nothing. I can see the network, but I cannot connect. It asks for password and says unable to connect. Any idea why it worked at the Apple Store and then at home, but then died again?
    emac, Mac OS X (10.4.11), G4 (gb ethernet)
  • adnixon Level 1 Level 1 (140 points)
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    Oct 10, 2010 9:50 PM (in response to jmagg)
    I think that the genius may have eliminated the iPhone as the issue. That being the case the next point of failure may be your router. Go to the router manufacturers website and establish if they have updated the firmware for your equipment and if they have published a new version consider updating the router software. Then in settings I would get the iPhone to forget the Network and then switch the phone to Airplane mode and then press then iPhones Menu and On/Off button together until you see the Apple logo appear and then disappear. Whilst the iPhone is OFF switch the router OFF and wait say 5 minutes for the IP lease to be renewed by your ISP [assuming that it is dynamic]. Then switch you Router ON and make sure that another WiFi device can connect. As administrator logon [using your browser]to the http address of a Router. The usual address is either or and check as to what devices are connected.
    Switch the iPhone On then switch Airplane mode Off and then try to establish the WiFi connection. If you still cannot achieve connectivity as further proof you have a router problem [be it hardware software or how it is configured] try and connect to another WiFi Network. In my part of the world that would be Macdonalds or a store location for my service provider. Good luck as problem solving is simply a process of eliminating the issues. Ant..
    2 x IBM Core2 Duo 3Ghz Vista + 2 x XP 2 x iPhone 3G OS 3.0 1 x AE 1 x MacMini
  • jmagg Level 1 Level 1 (0 points)
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    Oct 12, 2010 12:12 AM (in response to adnixon)
    Thanx for the help. It still doesn't work. When I restored the phone as new, it worked for about a day. Also, my laptop and my wife's iphone (still running iOS3) connect fine. Here's another strange wrinkle. As part of my testing, I plugged in an old LinksysG router. It connected to that. It was just plugged into the wall nothing else. When I unplugged the old router my iPhone was connected to my newer one. As of now it still is, although I fully expect it to not work sometime tomorrow. My N-router is a TrendNet and I can't find a setting for logging on it. Apparently, the iPhone won't connect to the TrendNet unless it connects to another network first. Any ideas?
    iPhone 3G, iOS 4
  • adnixon Level 1 Level 1 (140 points)
    Currently Being Moderated
    Oct 12, 2010 1:00 AM (in response to jmagg)
    If the iPhone connects to a 802.11/g router and the TrendNet is a 802.11/n router then the TrendNet router should be configured to support both /g and /n. I think that you might find that the http address for the TrendNet is and the default user name is 'admin' and password 'admin' Ant..
    2 x IBM Core2 Duo 3Ghz Vista + 2 x XP 2 x iPhone 3G OS 3.0 1 x AE 1 x MacMini
  • jmagg Level 1 Level 1 (0 points)
    Currently Being Moderated
    Oct 12, 2010 2:28 AM (in response to adnixon)
    It is set as /b,/g and /n. And it actually connected to the TrendNet for a couple hours. Just like after going to the Apple Store, I came home and it connected just fine till the next day. Tomorrow, I'm going to set up the Linksys as an AP to see if that works. Thanx again for the help.

    iphone 3g, iOS 4
  • Stephen Epstein Level 1 Level 1 (5 points)
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    Oct 27, 2010 4:44 AM (in response to KingDude)
    Depends upon your problem.

    The problem of not being able to connect to public WiFi (hotels, airports, etc.) seems to be fixed for me. Not fully tested, yet, but I am able to connect in a few places I was unable to before.
    MacPro, MacMini, iMac G4, MacBook (Late 2008), iPhone 3GS, Mac OS X (10.6.4)
  • Gotthepip Calculating status...
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    Oct 27, 2010 8:29 AM (in response to Wrinkly Pea)
    Have had iPhone3 since new and been happy with it. Upgraded to iOS4 and wifi started regularly dropping out and has now stopped searching completely. Tried resets and restores to no avail. Network says hardware problem definately not software but I remain unconvinced. Upset that Apple have not been helpful and are ignoring what is obviously a problem. So much for a premium product at a premium price. I will not be buying in to that again anytime soon.
    iPhone 3g, iOS 4
  • kramerr Calculating status...
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    Oct 27, 2010 9:49 AM (in response to Wrinkly Pea)
    I have the same issue with intermittant or no connectivity to Wi-Fi. Phone was working 100% until a couple of days ago. Now it cannot connect to the Wi-Fi that I normally use. I took the phone into the local Apple store and it connected to their network. The Genius told me that the phone will stay on 3g. When it accesses the Internet (Wi-Fi), then it will will switch to Wi_fi and bypass 3g. IMO, the Apple reps are covering up a flaw with the OS. Why would Apple release an operating system that will not work on the older phones ??? It looks like it is a big money grab in that everyone should be constantly upgrading their hardware to the latest and greatest.

    If something works good, why change it ?!?!?!?!? I am totally disappointed with this whole issue. I am tempted to roll back my OS to a version I know will work.
    iphone, iPhone OS 3.1.2


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