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Samsung Galaxy S7 Wi-Fi switch disabled after Android Nougat update [Troubleshooting Guide]

I cannot stress enough how important Wi-Fi is with your #Samsung Galaxy S7 (#GalaxyS7). Needless to say, if it doesn’t work, then you have to perform troubleshooting procedures to determine whether the problem can be fixed on your end or you will need a technician that may help you solve the issue.

In this post, I will tackle 3 issues that have something to do with Wi-Fi. The first one is about the Wi-Fi switch that’s reportedly been disabled shortly after an update. More often this problem is caused by some corrupt caches or perhaps some apps crashed and caused the system to crash as well. Read on to know how to troubleshoot this problem as well as the other issues tackled in this post.

But before we jump right into our troubleshooting, if you have other issues with your phone, make sure to drop by our troubleshooting page for we have already addressed hundreds of problems with this device since it was released. Find issues that are similar with yours and use the solutions and/or troubleshooting guides we suggested. If they don’t work or if you need further assistance, feel free to contact us by filling up our Android issues questionnaire.

Galaxy S7 Wi-Fi switch greyed out after the Nougat update

Problem: Hi guys. My phone is acting up after the most recent update. It’s a Galaxy S7 phone and I recently downloaded the Nougat update. It took almost an hour before the phone rebooted on its own as a sign that the update was successfully installed. That’s what I think it is but I’m not really sure about it. But anyway, after the update, my phone could no longer connect to the internet via Wi-Fi and when I investigated, I found out that the Wi-Fi switch is disabled or greyed out. Basically, the device can’t connect using such method, although I can browse the web and download apps using data. The thing is, I have to pay for the data and I already have Wi-Fi at home so I need my phone to work like before. Can you help me figure this out?

Troubleshooting: During firmware updates, there are services that may not function properly after the new firmware is installed. This is due to some caches or data that got corrupted. In this section, I will tackle about the greyed out Wi-Fi switch which seemed to have bugged many Galaxy S7 owners after Nougat.

We’ve already addressed a lot of issues like this in the past and there were cases wherein the problem persisted after basic troubleshooting but there were also ones that were easily fixed after doing a procedure or two. With that being said, this is what you should do…

Step 1: Reboot in safe mode and toggle Wi-Fi switch on/off

Doing this will immediately isolate the problem so you will know if one or some of your downloaded apps is causing the issue. This method is very effective with S3 and S5 that also encountered issues like this before so I want you to try it out and see if the problem gets fixed. This is how you start your phone up in safe mode…

  1. Press and hold the Power key.
  2. As soon as you can see the ‘Samsung Galaxy S7 on the screen, release the Power key and immediately hold the Volume Down key.
  3. Continue holding the Volume Down button until the device finishes rebooting.
  4. You may release it when you can see ‘Safe mode’ in the bottom left corner of the screen.

If the switch is still disabled in this mode, then you have to perform a couple of firmware-related troubleshooting procedures.

Step 2: Delete the system cache

Some caches may have been corrupted and one of them may have been the cache for Wi-Fi. The thing with caches is that you can delete them and still expect nothing will happen with your device, however, when they get corrupted and the new system uses those corrupt files, issues like this may occur. So, we need to delete them so the system will replace them with new ones and this is how you do it:

  1. Turn off the phone.
  2. Press and then hold the Home and Volume UP keys, then press and hold the Power key.
  3. When the Samsung Galaxy S7 shows on the screen, release the Power key but continue holding the Home and Volume Up keys.
  4. When the Android logo shows, you may release both keys and leave the phone be for about 30 to 60 seconds.
  5. Using the Volume Down key, navigate through the options and highlight ‘wipe cache partition.’
  6. Once highlighted, you may press the Power key to select it.
  7. Now highlight the option ‘Yes’ using the Volume Down key and press the Power button to select it.
  8. Wait until your phone is finished wiping the cache partition. Once completed, highlight ‘Reboot system now’ and press the Power key.
  9. The phone will now reboot longer than usual.

After this, try to check the Wi-Fi switch if it’s still disabled and if so, then you have no other choice but to do the next step.

Step 3: Perform the Master Reset

You are left with no choice but to reset your device if the previous steps didn’t work out. Doing this will surely fix the problem but it always comes last because of the hassle you have to undergo in backing up your data and files and restoring them after.

  1. Turn off your Samsung Galaxy S7.
  2. Press and then hold the Home and Volume UP keys, then press and hold the Power key. NOTE: It doesn’t matter how long you press and hold the Home and Volume Up keys, it won’t affect the phone but by the time you press and hold the Power key, that’s when the phone starts to respond.
  3. When the Samsung Galaxy S7 shows on the screen, release the Power key but continue holding the Home and Volume Up keys.
  4. When the Android logo shows, you may release both keys and leave the phone be for about 30 to 60 seconds. NOTE: The “Installing system update” message may show on the screen for several seconds before displaying the Android system recovery menu. This is just the first phase of the entire process.
  5. Using the Volume Down key, navigate through the options and highlight ‘wipe data / factory reset.’
  6. Once highlighted, you may press the Power key to select it.
  7. Now highlight the option ‘Yes — delete all user data’ using the Volume Down key and press the Power button to select it.
  8. Wait until your phone is finished doing the Master Reset. Once completed, highlight ‘Reboot system now’ and press the Power key.
  9. The phone will now reboot longer than usual.

I hope this helps.

Galaxy S7 could not connect to Wifi After System Update

Problem: I updated the system of my phone with no luck, I don’t understand what happened. Yesterday, when I tried to connect to my Wifi I noticed that my phone wouldn’t connect even the switch is turned on. I rebooted it also for several times but still could not connect. Any help would be greatly appreciated.

Solution: The Samsung Galaxy S7 can be considered as one of the most advanced phones available in the market today but like other devices it’s not perfect and still prone to bugs and other issues. As you stated that the problem occurs after system update, then most probably it is a firmware related issue or a downloaded app triggered it. On the other hand, hardware problem might also be the caused that your device is unable to connect on your Wifi. To determine what the problem is, all you need to do is perform software troubleshooting procedures that we provided below.

Restart your device in Safe mode. If you installed third-party apps to speed up or boost Wifi connection, that may be the reason that the issue is happening. You can boot your device in Safe mode to prevent all downloaded applications from running in the system and observe closely if the issue occurs. While in this state and your device can connect to your Wifi, then you can uninstall suspected apps until the issue is fix. Follow the procedure above on how to boot in safe mode.

Wipe the System Cache partition via recovery mode. If running in Safe mode won’t resolve the problem, then wiping the system cache partition might fix it. Through this method the temporary files where the caches were stored will be deleted to force the device to create newer caches that can make your phone run smoothly and fix this problem.

Perform a hard reset on your phone. If all the steps didn’t work, your last chance to fix the problem is to do master reset on your phone. Unlike the previous procedures, this method will delete everything like contacts, messages, music, videos and etc. So, before you proceed, make sure to transfer all your files to your computer and SD card because all of it will be deleted once you will bring back the device to its default settings.

Galaxy S7 Wi-Fi not working after system update

Problem: Hello! I’m not sure what is happening on my Samsung Galaxy S7 since I updated the system just this week ( I can’t remember the exact day) wherein the Wifi will turn on and off. I rebooted my phone and configured my Wifi settings but nothing works. Please help!

Solution: The first thing that you should do is to verify if your other devices could connect to your Wifi. If not, then it might be your internet connection has an issue and not your device. If this is the case, you can contact your Internet service provider for help to fix the problem. However, if only your Galaxy S7 could not connect to your Wifi, then most likely the device has a firmware or hardware related issue.

To determine what caused the problem you need to spend time performing the troubleshooting procedures by booting your phone in Safe mode. The purpose of this method is to identify if one of your third-party applications installed is the culprit. While in this state observe closely if the issue is still happening. If not, uninstall every suspected third-party app on your phone until the issue is fix.

However, while in Safe mode and the issue still occurs then probably the system caches had been corrupted. Try to delete the system caches and observe if there’s progress after performing the method. If the problem is still the same, you can proceed to your last resort by resetting the device. By bringing back the device to its factory default there is a big chance that the issue will be fixed. All leftover corrupted caches on your phone will be deleted and take note that all stored files will be deleted so much better to backup everything before you go through to the procedure.

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6 Comments

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  1. I installed Nougat on my S6 last week and I also have problems with opening the Wifi Settings.
    Every time I try to change networks my system-settings application crashes! (This happens both when keeping the Wifi-icon pushed down and also by going Wifi via Settings)

  2. I updated to Nougat and have the same WIFI non-connect problems. I turn it on, it scans, sometimes it finds networks, then it either turns itself off or “failure to connect to network” happens and it turns off. I have tried all the above suggestions.
    I do not have enough data to save everything and do a factory reset. I will lose a lot.
    Why can’t someone come up with a fix for this that doesn’t require me to have to reset and set my phone up all over again??!!

  3. Thanks for the tip. I didn’t have to resort to safe mode steps called out above, but used the above guidance and thought of a simpler process – which worked! So thank you!!

    Here’s what I did: (S7, Nougat, wifi calling was working with previuos Marshmallow)
    1) swipe from top down twice to reveal full set of hardware switches
    2) turn off wifi
    3) press wifi calling 2 times (turn off, then turn on)
    4) press & hold wifi calling & check that options can now be selected
    5) turn on wifi

    In my case, after step 4 above, my wi-fi calling settings were restored (not gray anymore) and wifi calling was confirmed.

  4. I had a similar issue. The wifi would turn on and off. In safe mode wifi connected. I wiped cache. I uninstalled google voice app and wifi started working again.

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