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How to fix a Samsung Galaxy S9 Plus that has no Internet access even when Wi-Fi is connected [Troubleshooting Guide]

This post tackles an issue on the Samsung Galaxy S9 Plus that cannot access the Internet even when it’s connected to the Wi-Fi network. Read on to find out what could have possibly caused such problem to occur and what possible solutions to try on.

Before you troubleshoot, verify and ensure that your device is connected to the correct Wi-Fi network. This may sound stupid but it happens sometimes especially when you’ve set up more than one Wi-Fi networks on your phone. Thus it won’t hurt to double-check. If you already have that checked and yet you ended up having the same issue, then you can start to troubleshoot and fix network errors on the phone. Here are some potential solutions for you to try on.

Before anything else, if you have other issues with your device, try to browse through our troubleshooting page as we’ve already addressed several issues with this device. Odds are that we’ve already published a post that tackles similar problems. Try finding issues that have similar symptoms with what you currently have and feel free to use the solutions we’ve suggested. If they don’t work for you or if you still need our help, then fill up our questionnaire and hit submit to contact us.

First solution: Reboot your network equipment (wireless router/modem).

Rebooting (power cycle) the network equipment helps clear firmware issues on the modem or wireless router that might have prevented it from working properly. Like smartphones, network equipment can also be halted by firmware crashes that can potentially yield to various types of Wi-Fi connectivity issues. To clear this out, follow these steps to power cycle or reboot your wireless router or modem in use:

  1. Press the Power button or switch to power off the device completely.
  2. Unplug the AC adapter from the power source.
  3. After at least 30 seconds or 1 minute, plug it back in.
  4. Then press the Power button/switch to turn on again.

Wait until all the light indicators become stable and your phone to reconnect to Wi-Fi automatically.

Second solution: Turn Wi-Fi off and on then restart your phone.

If the problem persists after rebooting the network equipment twice or more, then you can start troubleshoot software errors that caused network problems on the phone. As your first simple solution, turn Wi-Fi off and on and then reboot your phone with these steps:

  1. Swipe up or down from the center of the Home screen to access the Apps screen.
  2. Tap Settings.
  3. Go to Connections-> Wi-Fi menu.
  4. Tap the Wi-Fi switch to turn Wi-Fi off for a few seconds.
  5. Then tap the Wi-Fi switch again to turn Wi-Fi back on.

After toggling Wi-Fi off and on, reboot your Galaxy S9 Plus with these steps:

  1. Press and hold the Power button until the Power off prompt appears then release.
  2. Select the option to Restart.
  3. Then tap Restart again to confirm.
  4. Wait up to 30 seconds for your phone to finish restarting.

This can help clear minor software glitches that might have caused the Wi-Fi network to become erratic.

Third solution: Forget Wi-Fi network then reconnect.

Forgetting the Wi-Fi network means deleting the Wi-Fi network from your device. This can potentially resolve the issue if it’s inflicted by a dysfunctional Wi-Fi network in use.  It’s possible that the Wi-Fi network becomes corrupted and is no longer functioning properly. In that case, you will need to delete or forget the network from your phone’s memory, set it up, and then connect like it’s the first time your phone does. Here’s how to forget Wi-Fi network on your Galaxy S9 Plus:

  1. Swipe up on an empty spot from the Home screen to open the Apps screen.
  2. Tap Settings.
  3. Go to Connections-> Wi-Fi menu.
  4. If necessary, tap the Wi-Fi switch to turn the feature on.
  5. Touch and hold the network name in use then tap Forget network option.

After deleting your Wi-Fi network, reboot your phone and then scan and reconnect to your Wi-Fi network with these steps:

  1. Open the Apps tray by swiping on an empty spot from the Home screen.
  2. Navigate to Settings-> Connections-> Wi-Fi menu.
  3. Then tap the Wi-Fi switch to turn on Wi-Fi if necessary. A list of wireless network in range will then show up.
  4. If you don’t see your Wi-Fi network in the list, tap More to add your Wi-Fi network. Otherwise, tap to select your Wi-Fi network from the list and then tap the Connect button.
  5. If prompted, enter the correct password to access your Wi-Fi network.

Once connected, try to open a website and see if you can now access the Internet.

Fourth solution: Reset network settings on your Galaxy S9 Plus.

Invalid or incorrect network settings can also result to a similar issue. This is usually the case when a new software update is installed and then it automatically overrides the current settings on the phone. There’s a tendency that some settings ended up having conflict with the network or other system functions of the phone. To clear this out, reset network settings on your Galaxy S9 Plus with these steps:

  1. Open the Apps tray by swiping on an empty spot from the Home screen.
  2. Navigate to Settings.
  3. Tap General management.
  4. Select Reset.
  5. Tap Reset network settings from the given options.
  6. If prompted, enter the password for your device.
  7. Review the information and then tap Reset Settings to confirm.

Allow your device to finish resetting and restoring the default network settings. When it’s done, restart the phone and then scan for and reconnect to your Wi-Fi network.

Fifth solution: Factory data reset/master reset your Galaxy S9 Plus.

Among the last options to consider if the problem continues after carrying out the prior methods is a factory data reset or master reset. This will wipe everything from your device including customized settings, apps, and other saved data. Tough bugs and malware that are inflicting network troubles are likewise removed from the phone. Thus you’ll have a totally clean and fully functional device afterwards. Should you wish to give it a try, back up all your important data then follow these steps:

  1. Open the Apps tray by swiping on an empty spot from the Home screen.
  2. Navigate to Settings.
  3. Tap General management.
  4. Select Reset.
  5. Tap Factory data reset from the given options.
  6. If prompted, enter the password for your device.
  7. Review the information and then tap DELETE ALL to confirm.

After the reset, your phone will reboot by itself and then restore to default settings. This means you will need to set up and connect to your Wi-Fi network to use it again on your device.

Other options

For further assistance and recommendations, contact your network service provider or carrier and report the issue. You can also ask them to check their outage system to determine if the problem is due to any ongoing network maintenance or similar activities. Should there be any network maintenance going on, all you have to do is wait until it’s done and your Wi-Fi internet should be back to normal by then.

If you suspect that your network equipment (wireless router or modem) is at fault, contact the device manufacturer or your carrier’s technical support for more help.

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