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How To Fix Galaxy S3 WiFi Authentication Error

samsung galaxy s3

The WiFi Authentication Error in Samsung Galaxy S3 has been bugging a lot of users lately. Many thought the problem was caused by a bug but it wasn’t. It turned out that the authentication problem is simple to fix. Majority of users who reported to have experienced the issue said they have fixed the problem by following simple procedures. That is what we are going to point out in this post.


Based on reports, the WiFi Authentication Error in Galaxy S3 happens without any service to trigger it. However, there several users who said the issue occurred after they have left their phones in deep sleep that by the time they were ready to use it, they couldn’t browse the web anymore nor receive emails. Experts whom we asked about this problem said it is a simple connectivity issue. Authentication errors also happen in laptops, tablets or any other IP-capable devices not just smartphones. So they suggest doing troubleshooting procedures on both the wireless network and the phone.

This problem was experienced by other users with different devices during Gingerbread times. The sheer number of Galaxy S3 owners who reported to have experienced this problem made it like it was an S3-exclusive issue even though it’s not. So this tutorial, while we focus more on helping Galaxy S3 owners, could also be used for other devices like the Nexus 4, Galaxy Note, etc.

Signs of WiFi Authentication Error 

Aside from the error window that would pop up, the following are signs and symptoms that you are experiencing the WiFi Authentication Error.

  1. WiFi refuses to connect without apparent reason.
  2. The connection randomly drops.
  3. WiFi connects but immediately disconnects after acquiring an IP address.

Possible Fixes 

There’s no point in trying various troubleshooting procedures if you don’t know what the problem is. So, the first thing you’ll have to do is isolate the issues so you’ll know where to begin.

  1. After getting the authentication error in your Galaxy S3, try to connect other devices to your network. If you have a laptop or other mobile phones, try connecting them to see if they, too, would get the same error. If they can connect just fine, then you already know the problem is not with your router/network.
  2. Try rebooting your phone first. Reboot often fixes simple problems so you should try that before you go any further. Once the phone is up, try reconnecting to see if you can.
  3. Go to Settings => Wi-Fi and make sure the toggle switch is on. Tap and hold on the name of your network to open its settings page. Once it pops up, tap on “Forget this Network” button.
  4. Let the phone detect networks in range and select the one you usually connect to. Enter credentials and try to browse the web to see if you can.
  5. If you can’t connect to your network still, try to find networks you can temporarily connect to and see your phone works just fine. If it does, then try using a different encryption type in your network. There were reports that S3 not connecting to a network that uses WPA2. However, if your phone won’t connect even with other networks, there could be some problem with the software. Try to see if there are available updates.

If you know other troubleshooting procedures for Galaxy S3 WiFi Authentication Error and want to share it with us, email us at [email protected] Likewise, for those who have other problems aside from the one mentioned here, feel free to contact us at the same address.

  • Bill Martin

    I was expecting a fix, those are just standard troubleshooting tips. There is a real problem with the S3 that needs to be addressed and hopefully Android 4.1.2 will be the solution.

    Your symptoms are spot on for the problems I experience.

    I had this problem at home and at the office with both my S3 and my Samsung Tab2 7″. Both are on 4.1.1.

    I determined that the problem occurred when there was more than 1 router SSID with the same name. At home my dual band router had the same name for both the 2.4 and 5 gig. I renamed the 5 gig and have not had a problem there since. At the office I don’t have the ability to change SSID names and the problem continues.

    Worst of all is the smug look on iPhone users faces when I can’t get a connection.

  • Ian

    So i read your article. The thing is this is one of those examples of things that worked perfectly then break following a change. In my case the home network is used for both perso and professional connectivity, and its been that way for years. Visitors, some who’ve returned 3 or 4 times, have used the same 128bit key with no issues. On the network are 4/5 devices hard wired 3/4 on wifi and they dont have ANY issues.
    My s2 never ever had any. The s3 worked fine every day. But after the last upgrade or so this wifi issue is recurrent almost daily.
    I get around it by simply restarting my router, then it connects using the same key as always.
    When the wifi cinnection drops, usually after a sleep or when returning from a trip where the s3 was connected to different hot spot then it doesn’t matter how many times i enter the same key, it won’t accept the connection.
    Restart the router and its works immediately with the same old key, yes the one it refused, and without even having to enter it.

    So the issue is obviously local to the s3 since the upgrade. They’ve touched something either in the network code or security code IMHO.


  • Joshua

    this is ridiculous how can such a complex phone have such a simple problem people bag on iphone n others but i never had such a simple problem on any other devices

  • Jørgen

    I just got the S4, and I cant connect to my home wifi at all.
    There are 2 laptops, and 4 iphones already connected to the wifi, so I really doubt it beeing the routers( access point’s) fault.

    Im really clueless on what to do here. We have a quite big house som we installed this enterprise access point, and to access it is nearly impossible. I cant connect to it through lan cables, so I’ll have to use a Serial cable to thermal into it. You get my point.

    Im considering downgrading to whatever version of JB that people can connect on, but I dont know if you can even downgrade the S4 at this point. As Bill Martin said, the worst of all is beeing the one in the family with the brand new phone who cant connect to the friggin wifi.

  • Robert

    Well this was just lip service to a genuine problem. Nothing here would resolve an actual issue.

    My Galaxy S3 will drop the connection only during usage and refuse to reconnect till I reboot my wireless router. The router still shows the device as connected which is why it’s refusing to ‘reconnect’ it.

    However the fault lies with the phone not my router, other services are fine I lose no internet connectivity and at some point the connection is lost on the router and the phone can reconnect at that point. I reboot the router to fix the problem so I don’t have to wait for the router to drop the phone from its list of connected devices. However it can also happen at work on the wireless and is a direct issue with the phone. It’s happened since day one as well and has been restored to factory settings once as well. It’s a fault on the phone/os not with our routers.


  • Annoyed S3 user

    I have tried all of these “solutions” the only thing i can think to do is load an old software for example one of the ice cream software’s. But that takes some techy effort that i cant be bothered to harness, other than that we must wait for another update.
    One consolation is if you sit directly next to your router I have found your phone will stay connected. I have tried to boost that with WiFi connection booster apps which has let me go into my kitchen SOMETIMES.

  • Rose

    Go into your router and go to advance and under wireless you want to go to wireless card list and click set up assess list …here you will add your device with the mac address (do not include the : with the mac address). Once you have added this to your you need to turn this device on. Then hit apply.

    If you do not know your mac address for your phone go into your settings on your phone and scroll down to about device once you enter into about device scroll down through the list until you see your MAC address. You will need to write this down to enter into the wireless card assess list.

    Hope this helps. My phone connected immediately once I did this.

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