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Samsung Galaxy S6 showing black screen and won’t respond after Nougat update [Troubleshooting Guide]

The black screen of death is among the most common power related problems many Samsung Galaxy S6 owners have been complaining about. We’ve addressed this kind of problem many times before but it keeps on coming back not just to the subject of our troubleshooting in this post but also to other Android devices. In other words, you’re not the only one having a problem like this. Others may have more serious issues than what you currently have.

In this article, however, I will tackle this problem again with the Galaxy S6 being the subject of our troubleshooting. We will try to consider every possibility and rule out each of them until we can pinpoint what the issue is all about and whether or not we can fix it without any help from a technician. It is imperative that you try to troubleshoot your phone as most of the problems you may encounter are easier to fix than what they seem. So, if you own this phone, continue reading below as we may be able to help you.

For those who are looking for a solution to a totally different issue, visit our troubleshooting page for we have already addressed hundreds of problems since we started supporting this device. Find issues that are the same or similar with yours and use the solutions and/or troubleshooting guides we suggested. If they don’t work for you or if you need further assistance, then fill up our Android issues questionnaire and hit submit to contact us.

Samsung Galaxy S6 screen turned black, won’t respond after Nougat update

Problem: I was notified about the Nougat update a week ago but I didn’t install it until the other day as the notification keeps coming back up. Long story short, the phone rebooted after the update and it got stuck on the black screen. I tried rebooting it and it did. The next morning, I found my phone with a black screen and when I tried rebooting it, it wouldn’t respond. Tried charging it, still nothing. Can you help?

Troubleshooting: Considering the fact that the problem started after the Nougat update, we have a reason to believe that it’s caused by some corrupt caches. At least, this is what we have to assume first as deleting them is safe for your phone and data. With that being said, here’s what I suggest you do:

Step 1: Start your phone in Recovery mode and wipe cache partition

Let’s after the system caches immediately as the problem started after an update, which may have caused other caches to become obsolete while others corrupt. So, we have to delete them all at once so that they will be replaced with new ones:

  1. Turn off the device.
  2. Press and hold the Volume up, Home, and Power keys together.
  3. When the Samsung Galaxy S6 logo screen displays, release only the Power key.
  4. When the Android logo displays, release the Volume up and Home keys. ‘Installing system update’ appears for 30 – 60 seconds, followed by the Android system recovery menu.
  5. Press the Volume down key until ‘wipe cache partition’ is highlighted.
  6. Press the Power key to select.
  7. Press the Volume down key until ‘yes’ is highlighted.
  8. Press the Power key to select.
  9. When the wipe cache partition is complete, ‘Reboot system now’ is highlighted.
  10. Press the Power key to restart the device.

The phone may take a little more time to reboot as rebuilding the caches may take time. However, if the phone refuses to boot up in Recovery mode, then you won’t be able to complete this step and in which case, you should try the next step.

Step 2: Do the Forced Reboot procedure

If the phone became unresponsive due to system crash, then this procedure can fix it provided the phone has enough battery to power it up. Press and hold the Volume Down and Power keys together for 10 seconds and the phone should reboot normally. In this case, the problem may already be fixed but if the phone still shows the black screen of death, then you should try the next step.

Step 3: Attempt to boot in safe mode

We will simply try to see if the phone is capable of booting up when in safe mode, which means, all third-party apps are temporarily disabled because if so, then it’s clear that there’s an app that’s messing up with your device. Perhaps there are some of them that are no longer compatible with the new firmware and has to be updated. So try to follow these steps:

  1. Turn the device off.
  2. Press and hold the Power key.
  3. When the Samsung Galaxy S6 logo appears, release the Power key, then immediately press and hold the Volume down key.
  4. Hold the Volume down key until the device finishes restarting.
  5. When ‘Safe mode’ appears in the bottom left, release the Volume down key.

Assuming the phone responded and booted  up in this mode, then you should try finding the apps that are causing the problem and uninstall them one by one…

  1. From the Home screen, tap Apps.
  2. Tap Settings.
  3. Under ‘Device,’ tap Applications.
  4. Tap Application manager.
  5. Swipe right to the DOWNLOADED screen.
  6. Tap desired app, then tap Uninstall.
  7. Tap Uninstall to confirm

If the problem still persists after this, then I suggest you backup your files and data and then reset your phone…

  1. From the Home screen, tap Apps.
  2. Tap Settings.
  3. Tap Backup and reset.
  4. If desired, tap the Backup my data slider to ON or OFF.
  5. If desired, tap the Restore slider to ON or OFF.
  6. Tap Factory data reset.
  7. Tap Reset device.
  8. If screen lock is enabled, enter PIN or password.
  9. Tap Continue.
  10. Tap Delete all.

Step 4: Attempt to boot in Recovery mode

If your phone cannot boot up in safe mode, then you should try this. The recovery mode serves as a fail-safe in case your phone encounters serious firmware issues. Even if the device is suffering from a serious problem with its firmware, it may still be able to boot in recovery mode and if successful, you can do a couple of things that can potentially fix the problem, namely; wipe cache partition and master reset.

How to boot in Recovery mode and wipe cache partition

  1. Press and hold the Volume up, Home, and Power keys together.
  2. When the Samsung Galaxy S 6 logo screen displays, release only the Power key.
  3. When the Android logo displays, release the Volume up and Home keys. ‘Installing system update’ appears for 30 – 60 seconds, followed by the Android system recovery menu.
  4. Press the Volume down key until ‘wipe cache partition’ is highlighted.
  5. Press the Power key to select.
  6. Press the Volume down key until ‘yes’ is highlighted.
  7. 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.

How to boot in Recovery mode and do the master reset

  1. Press and hold the Volume Up and Home keys, then press and hold the Power key.
  2. When the Samsung Galaxy S 6 logo displays, release only the Power key.
  3. When the Android logo displays, release the Volume Up and Home keys. ‘Installing system update’ appears for 30 – 60 seconds, followed by the Android system recovery menu.
  4. Press the Volume down key until “wipe data / factory reset” is highlighted, then press the Power key.
  5. Press the Volume down key until “Yes — delete all user data” is highlighted, then press the Power key.
  6. When the master reset is complete, “Reboot system now” is highlighted.
  7. Press the Power key to restart the phone.

If the phone cannot boot up in recovery mode, then it’s time you brought it to the shop and let the tech fix the problem for you. At least, you’ve done what you have to do to try to fix the problem.

Galaxy S6 locks up but the screen won’t come back on

Problem: After I did a system update almost 2 weeks ago I have been having an issue with my S6  locking up and the screen not coming back on. I know the phone is on because I have been talking on the phone when this has happened. The only way I have been able to unlock my screen and get light back on has been a hard reboot or by holding the power button and volume down button for about 10 seconds or so before my phone will reboot. Can you help me please?

Solution: It seems like the caches or files in your phone have been corrupted during the update. Due to the old caches in the directory the device is having a hard time recognizing them and that might caused the firmware to crash. On the other hand, if there’s a third-party app that created conflicts in the system, it could also result to your phone not being able to boot up completely. This time, I will walk you through to the procedures that you should do to determine what caused the problem. Just follow these methods:

Step 1: Charge your phone

In troubleshooting this issue it is important for you to check the battery if it is defective or not. Sometimes, due to insufficient energy that can power up to the components that might also a possibility that the device could not boot up completely. So, what we would like you to do is to charge your phone for 15 minutes and see if it is responding. If the LED above the screen is not lighting up or it is not totally responding, then it might be a hardware issue triggered it. You can bring the device to the nearest shop in your area and let the tech fix it. However, if it is responding proceed to the next step.

Step 2: Restart the device in Safe mode while connected to the charger

Assuming that the device is charging normally the next thing that you should do is by booting it in safe mode. In this android environment we have to disable temporarily all downloaded applications and letting the pre-installed runs in the system. So, if your phone will restart successfully, then there is a rogue app responsible for it and the best way to fix the issue is to uninstall every app you downloaded until the issue is fix. Here are the steps to boot in safe mode:

  1. Turn off your Galaxy S6.
  2. Press and hold the Power key.
  3. When ‘Samsung Galaxy S6 ’ appears, immediately release the Power key and then press and hold the Volume Down button.
  4. Continue holding the Volume Down button until the phone finishes the restart.
  5. When you see Safe Mode on the lower left corner of the screen, release the button.

Step 3: Clear the System Caches for it might be corrupted

As the new firmware has been updated it is advisable to every user to delete the system caches to make sure that caches are all new and able to run to the new firmware. Although we are not sure if corrupted files really triggered the problem but through wiping all old caches in the directory there is a big chance that the problem will be solved. So, here’s what you do:

  1. Turn off the device.
  2. Press and hold the following three buttons at the same time: Volume Up key, Home key, and Power key.
  3. When the phone vibrates, release the Power key but continue to press and hold the Volume Up key and the Home key.
  4. When the Android System Recovery screen appears, release the Volume Up and Home keys.
  5. Press the Volume Down key to highlight ‘wipe cache partition.’
  6. Press the Power key to select.
  7. When the wipe cache partition is complete, ‘Reboot system now’ is highlighted.
  8. Press the Power key to restart the device.

Step 4: Perform Master on your Galaxy S6

However, after all the methods you performed and the device still won’t turn on it is possible that the firmware was corrupted or bugged during the update. In this case, all you need to do is perform master reset on your phone. Through reset the firmware will be back to its factory default and take note that all files and data you saved in the system will be deleted once you proceed to the procedure. So, before performing the steps we recommend that you should create a backup for all of it. Here’s how to reset your phone:

  1. If you signed into a Google account on the device, you have activated Anti-theft. You will need your Google username and password.
  2. From the Home screen, tap Apps.
  3. Tap Settings.
  4. Tap Backup and reset.
  5. If desired, tap the Back up my data slider to ON or OFF.
  6. If desired, tap the Restore slider to ON or OFF.
  7. Tap Factory data reset.
  8. Tap Reset device.
  9. If screen lock is enabled, enter PIN or password.
  10. Tap Continue.
  11. Tap Delete all.

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