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Wi-Fi not working on iOS 8.4

Hi,

I had problems on iOS 8.3 where Wi-Fi worked at the beginning, but then stopped. Sometimes iPhone 4S attempted to connect, I saw wifi icon and then it disappeared. I tried Reset Network Settings, I managed to setup Wi-Fi connection again, but it worked for a few minutes and then again the same issue.

I was hoping that the issue will be fixed on 8.4, but now it's worse. After resetting network settings I cannot even join wifi network. After entering password, it says "Unable to Join the network. I have correct password, because I'm using it for other devices.

I tried to restore iphone through iTunes, but I cannot do that, because I'm getting error message "Find My iPhone" must be turned off. The problem is that I cannot turn Find My iPhone off in iCloud settings on the device, because Wi-Fi is not working. Now I cannot restore iPhone and I cannot setup Wi-Fi.

Another issue is the fact that device may not have 8.4 installed. Although it reports version 8.4, the device didn't show locked screen after update, like it did on iPad. It seems that device only shows version ioS 8.4, but hasn't really been updated, otherwise I would see locked screen after restart.

Is there a way to force iOS 8.4 update again on the device?

How can I fix wi-fi problem? Wi-Fi scanning seems to be a little slow. On that page the device often freezes for 20 seconds or so. The quality of iOS and Mac OS X has gone down dramatically.

I have $800 iPhone 4S, which has the antenna problem and I don't think I want another Apple device, if I can get Android device with better spec than iPhone 6 for $200. Over 3 years I made around 50 calls with this device and I'm not using much. I'm just using password manager app and need wifi for sync and backup.

You know what, forget this, because no one is going to fix/revert wifi code back to what it was on 8.0 or older.

MacBook Air (13-inch Late 2010), Mac OS X (10.7.2)

Posted on Jul 1, 2015 4:00 AM

Best reply

RobertDeveloper Author

Level 1

5 points

Posted on Jul 1, 2015 9:09 AM

iOS 8.4 with broken wifi also drains battery. In 3 hours battery capacity dropped from 100% to 73% (loss of 27%).

I recommend users who experience wifi issue to completely disable wifi until Apple fixes the problem. It looks like device is occasionally scanning wifi networks while in sleep mode.

After you disable wifi, avoid enabling it again or even navigating to the wifi settings. The device may freeze. In that case you need to press and hold power button and home button at the same time. When the devices shuts down, power up again and don't try to change wifi setting, leave it off.

I think the device must be doing something on the background that causes high CPU usage, device slows down and after a few ore seconds it freezes completely. Clearly some multi-threaded deadlock in wifi or networking routines.

View in context

210 replies

Jul 2, 2015 8:25 AM in response to Ben Kenon

I have an Iphone 6 and have just updated to IOS 8.4 - I can no longer connect to wifi anywhere. How on earth am I supposed to upload an IOS Fix once they release one?

Jul 2, 2015 8:30 AM in response to RobertDeveloper

Having the same issue. update to 8.4 and wifi gone. any resolution to this from apple.

Jul 2, 2015 10:31 AM in response to Ben Kenon

I'm not sure if this will help or not, but I was having the same issues with my 8.4 update. Tried to connect to my wifi this morning and was having no luck. Forgot the network, reset everything, re-entered the password...nothing worked. I figured I'd try and use itunes to reset it to factory and see if that would do the trick. Once I connected to itunes through the cable, something happened and the wi fi now works. I wish I knew more about what happened but that's all I have.

Jul 2, 2015 2:33 PM in response to RobertDeveloper

Same thing here. After upgrading my iPhone 6 to iOS 8.4 it cannot maintain a connection to my wi-fi (airport extreme) network. It works once in a while and then just sits there unable to even send an email let alone load a webpage. Then it will drop wi-fi altogether connecting via cellular instead using up my limited bandwidth.

barkhead

Level 1

4 points

Jul 2, 2015 3:02 PM in response to RobertDeveloper

I'm also experience random wifi disconnects on my iPad Air 2 since upgrading to 8.4. I can reconnect by turning wifi on and off... and my other apple devices work fine so it's not my router.

Csound1

Level 9

59,973 points

Jul 2, 2015 3:04 PM in response to barkhead

Take your iPad to an Apple Store.

esuark

Level 1

0 points

Jul 2, 2015 3:18 PM in response to RobertDeveloper

I have the iPhone 6 plus, updated to iOS 8.4. I was unable to connect wifi at home; I forgot the network and then when I entered my WPA password it kept telling me it was incorrect. I changed the password temporarily on the router and the phone was able to connect; I changed it back to the original password and I was able to connect again. Maybe this will help someone?

Jul 3, 2015 6:36 AM in response to RobertDeveloper

me too ... iPad air wifi more off than on after update 😠

Apple please help

Jul 3, 2015 7:01 AM in response to RobertDeveloper

After trying all of the suggestions I could find like resetting network, I stumbled upon something that worked for me. I opened the web UI for my Netgear ADSL router and noticed a discrepancy between the DNS addresses used there and the DNS addresses used by my iPod touch under iOS 8.4. Setting them both to Google's DNS (8.8.8.8 and 8.8.4.4) restored my WiFi access.

Jul 3, 2015 8:45 AM in response to Myneit

Hi guys,

Myneit is right. There may be some issue in iOS when DHCP is not properly configured on router. Although wifi connection should work as before (without any changes to our routers), it doesn't anymore. In my case I had router configured with DHCP enabled. Here is a temporary fix that worked for me:

1. Look into your WAN settings on the router, check primary and secondary DNS (ideally copy into clipboard). Open DHCP settings where DNS will be empty (or 0.0.0.0) set primary and secondary DNS and reboot wifi router.

2. Enable wifi on your iOS device and it should connect

Result:

Wi-Fi connection is still a little unstable, I get disconnects about every 3 - 5 minutes, but at least I could update apps.

Don't try to update iOS through wi-fi though. I doubt larger download is going to be successful.

I hope it helps to get at least some internet access.

Jul 3, 2015 9:04 AM in response to Ben Kenon

This worked for me! I also noticed that my wifi key is now case-sensitive, which it never was before. Did not change anything on my router.

Thanks for your temp fix! Sonos is back in business.

Jul 3, 2015 8:25 PM in response to RobertDeveloper

After ugrading to 8.4 - I can't even see my wifi router let alone connect to it. Tried to do a restore but the only one available was the 8.4 version! It's rubbish!

Jul 3, 2015 8:55 PM in response to Csound1

Are you serious? There are multiple threads, with many different users with multiple types of devices that worked perfectly fine before upgrading to iOS 8.4. Now we are having wifi connectivity problems. Why would you suggest taking the hardware to an Apple Store?

iHoly

Level 1

0 points

Jul 4, 2015 12:05 AM in response to Myneit

This is the same thing happening to me too. I'm still unable to connect to my WIFI at home and at work everything seems to be fine.

Jul 4, 2015 6:00 AM in response to RobertDeveloper

Now, where do I go to complain about iOS 8.4 screwing up my iPhone 6's ability to hold an LTE signal?

Wi-Fi not working on iOS 8.4