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How To Fix Galaxy S3 WiFi Authentication Error

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.

Overview 

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 mailbag@thedroidguy.com. Likewise, for those who have other problems aside from the one mentioned here, feel free to contact us at the same address.

14 Comments

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  1. Worked for me. I went to the wifi page, held my finger on the icon to the left of the network name until “forget the network” option came up. Selected it, and shortly the s6 connected when it found the network

  2. Tried to do this solution and it worked perfectly!!!
    Just changed the name of both 2.4Ghz and 5Ghz WiFi.
    THANKS!!
    Wish it works for everyone else.

    Quote:
    ”’update:

    The answer lies in the first comment at the bottom of this page:

    Quote: My – “dual band router” – had the same name for both the 2.4g and 5 gig. I renamed the 5 gig and have not had a problem there since…

    I had changed the password on my Router for the 2.4g setting only and not the 5g… so when i tried logging into my WiFi with my newer iPhone it must have been trying to connect to the 5g not the 2.4g and couldn’t log in. I shall now change the password to be the same for both 2.4g and 5g and have set a new “SSID” that’s the same for both settings…

    I hope this helps – cheers to all 🙂”’

  3. whats wrong with s3 it keeps on saying authentication error while other cheap phones can connect at ease should I burry this phone?

  4. sir, i will get a new Mobil in Samsung s8 model wifi can not connection and error code is authentication error occurred and i have install correct password.but the can not connected.

  5. OK – final update: this works perfectly…

    My new iPhone can connect to both 2.4g and 5g networks and my Router is a ‘Dual Band Router’ with both these settings…

    After a little playing around and experimenting i changed the ‘2.4g SSID and Password’ but left the 5g as it was – Now i can connect individually to either one. no more connection problems!!!

  6. update:

    The answer lies in the first comment at the bottom of this page:

    Quote: My – “dual band router” – had the same name for both the 2.4g and 5 gig. I renamed the 5 gig and have not had a problem there since…

    I had changed the password on my Router for the 2.4g setting only and not the 5g… so when i tried logging into my WiFi with my newer iPhone it must have been trying to connect to the 5g not the 2.4g and couldn’t log in. I shall now change the password to be the same for both 2.4g and 5g and have set a new “SSID” that’s the same for both settings…

    I hope this helps – cheers to all 🙂

  7. Solved it: Here’s what i discovered… The “authentication error occurred” is because another network close by is broadcasting the same ‘SSID’ and your very powerful iPhone – WiFi is trying to connect to the wrong Router – to fix – log into your Router and change the ‘SSID’ to a unique name you’ll recognize and then reconnect all your devices to the new “SSID” using same password – Select ‘Forget’ for the old network, so it no longer tries to automatically reconnect – worked like a charm for me – cheers 🙂

  8. i have a “Samsung Galaxy A3” and it was showing “Authentication error occurred” – i tried all kinds of methods and none of those worked. all my other devices connected with ease with same settings.

    So- i went up close to the router and ‘nek minit’ it connected. My Router was sitting on the floor under metal framed bunks – so i have moved it up higher – as metal and other objects can interfere with wifi signals…
    I wonder if some of the devices we have are fussy about the signal strength etc.

    I hope this simple fix helps others…

  9. Just want to say to all the people who are leaving comments that this site is useless, bull shite, etc. You are morons! Just because these solutions didn’t work for you doesn’t mean they haven’t worked for other people, which they clearly have. This site is trying to help people who don’t know how to solve issues with their phones/tablets/laptops, you are clearly some of those people, so you should be grateful people out there are trying to help you for FREE. If you don’t like it, go and pay a phone shop to sort it out for you. I want to thank the person/people who run this site and the people who contribute for spending their time being decent people and trying to help others. It’s much appreciated!

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