How to fix your Samsung Galaxy A40 with WiFi, Bluetooth and Network issues

The new Samsung Galaxy A40, while mid-range device, comes packed with impressive hardware and it’s actually very competitive. But no matter how fast or good a phone is, there would always come a time when issues will occur and the most common of them all is always related to the network.

In this post, I will walk you through in troubleshooting your Galaxy A40 that’s having some issues with its WiFi connectivity and other network features. We will consider every possibility and rule them out one by one until we can determine what the issue really is. So, if you’re one of the owners of this phone and are currently being bugged by this problem, continue reading as this article may help you.

For those who are looking for a solution to a different problem, drop by our troubleshooting page for we have already addressed some of the most common issues with the Galaxy A40. Browse through the page to find issues that are similar with yours and use the solutions we suggested. If they don’t work for you or if you still need our help, contact us anytime through our Android issues questionnaire.

Quick fix for WiFi and other network issues with Galaxy A40

Any WiFi related issues can be fixed by a method that only a few users actually know. Problems like when internet connectivity keeps dropping, phone keeps disconnecting from the network, mobile data gives poor or slow connection are among the most commonly reported issues. But then again here’s a fix and that’s to reset your phone’s network settings.

This will bring the phone’s network settings back to the defaults and based on our experience, this is a very effective method to fix almost all network-related problems provided they are caused by minor issues. In doing this, the following changes may occur:

  • Stored Wi-Fi networks will be deleted.
  • Paired Bluetooth devices will be deleted.
  • Background data sync settings will be turned on.
  • Data restrictive settings in applications that were manually turned on/off by the customer will be reset to the default setting.
  • Network selection mode will be set to automatic.

And connections will be brought back to default to reflect the following:

  • Airplane mode: OFF
  • Bluetooth: OFF
  • Data roaming: OFF
  • Mobile hotspot: OFF
  • VPN: OFF
  • Mobile data: ON
  • Wi-Fi: OFF

Now, in order to reset the network settings of your Galaxy A40, you have to follow these steps:

  1. Swipe down from the top of the screen to pull the notification panel down.
  2. Tap the Settings icon on the upper-right corner.
  3. Scroll to and tap General management.
  4. Touch Reset.
  5. Tap Reset network settings.
  6. Tap Reset settings.
  7. If prompted, enter your PIN, Password or Pattern.
  8. Finally, tap Reset.

After this, I suggest you reboot your phone and since Wi-Fi will be turned off, you have to enable it and let the phone scan for available networks in the area. If the hotspot you used to connect to is available, then you can find it in the list and if you know the password, it would be a lot easier to connect to it.

Troubleshooting Galaxy A40 with WiFi, Bluetooth, network issues

Assuming that the method above didn’t fix the issue with your phone, then you should try and troubleshoot your phone to know what the real problem is. Again, I would like to emphasize that any network-related issue can be fixed provided the phone’s firmware hasn’t been modified in any way. If you installed a custom ROM, you may refer to the developer’s page for some information on the radios as that might be the reason why you’re having such issues.

However, if the firmware’s integrity is intact, then continue your troubleshooting and here’s what you should do about it…

Find out if the problem occurs in Safe mode

There are times when third-party apps or any app for that matter may affect your phone’s performance and shut down some of the core functions like WiFi and other services. By running your Galaxy A40 in safe mode, you’re temporarily disabling all third-party apps so you’re basically isolating the problem. It’s important that you do this procedure first because it’s safe for both the phone and your data and will give you an idea as to what’s causing it. Follow these steps to start your phone in safe mode:

  1. Press and hold the Power key until options show.
  2. Tap and hold the Power off option until it changes into Safe Mode.
  3. Tap the Safe mode icon to restart your device.
  4. Once the reboot is successful, you should see ‘Safe mode’ at the lower-left corner of the screen.

Now, try to see if the problem still occurs because if it does not, it’s clear that there’s a third-party app or two that’s causing it. Find that app and uninstall it to fix the problem:

  1. From any Home screen, tap the Apps icon.
  2. Tap Settings.
  3. Tap Applications.
  4. Tap the desired application in the default list or tap Menu icon > Show system apps to display preinstalled apps.
  5. Tap Uninstall.
  6. Tap Uninstall again to confirm.

However, if the problem still happens in this mode, then move on to the next step.

Reset all settings in your Galaxy A40

Most of the time, incorrect settings may result to unpredictable performance of your phone and that may result to issues like this. We need to rule out this possibility and to do that, you just have to reset all settings in your phone. This will bring the phone to its default or factory settings however, none of your files and data will be deleted. So again, it’s safe but very effective…

  1. Swipe down from the top of the screen to pull the notification panel down.
  2. Tap the Settings icon on the upper-right corner.
  3. Scroll to and tap General management.
  4. Touch Reset.
  5. Tap Reset settings.
  6. Tap the Reset settings button.
  7. If prompted, enter your PIN, Password or Pattern.
  8. Finally, tap Reset.

After doing this, try to see if the problems still occurs, you have a couple of procedures to try.

Wipe cache partition

This procedure will delete all the system caches from your phone and replace them with new ones. It happens automatically and all you have to do is reboot your phone in Recovery mode and wipe the cache partition.

  1. Turn off the device.
  2. Press and hold the Volume Up key and the Bixby key, then press and hold the Power key.
  3. When the Galaxy A40 logo shows, release all three keys.
  4. Your Galaxy A40 will continue to boot up into the Recovery Mode. Once you see a black screen with blue and yellow texts, proceed to the next step.
  5. Press the Volume down key several times to highlight wipe cache partition.
  6. Press Power key to select.
  7. Press the Volume down key to highlight yes, them and press the Power key to select.
  8. When the wipe cache partition is complete, Reboot system now is highlighted.
  9. Press the Power key to restart the device.

If the problem still persists after this, then your last resort is the reset.

Backup file and reset your phone

This will delete everything your device and bring it back to its factory default settings but before you actually do this, if you have issues with your WiFi, try to reboot your router or modem and use other devices to verify it’s still working properly. If it’s with Bluetooth, try to pair it with other phones or laptops to see if it works.

Now, going back to the reset, make sure you make a backup of your important files and data as they will be deleted. Then disable the Factory Reset Protection by removing your Google account from  your phone so that you won’t be locked out of your device after the reset. Once everything is in order, follow these steps to reset your A40:

  1. Turn off the device.
  2. Press and hold the Volume Up key and the Bixby key, then press and hold the Power key.
  3. When the Galaxy A40 logo shows, release all three keys.
  4. Your Galaxy A40 will continue to boot up into the Recovery Mode. Once you see a black screen with blue and yellow texts, proceed to the next step.
  5. Press the Volume down key several times to highlight ‘wipe data / factory reset’.
  6. Press Power button to select.
  7. Press the Volume down key until ‘Yes’ is highlighted.
  8. Press Power button to select and start the master reset.
  9. When the master reset is complete, ‘Reboot system now’ is highlighted.
  10. Press the Power key to restart the device.

I hope this troubleshooting guide can help you one way or another. If you have other concerns, feel free to contact us anytime.

Connect with us

We are always open to your problems, questions and suggestions, so feel free to contact us by filling up this form. This is a free service we offer and we won’t charge you a penny for it. But please note that we receive hundreds of emails every day and it’s impossible for us to respond to every single one of them. But rest assured we read every message we receive. For those whom we’ve helped, please spread the word by sharing our posts to your friends or by simply liking our Facebook page or follow us on Twitter.