How To Fix The Samsung Galaxy M40 Black Screen of Death Issue

The #Samsung #Galaxy #M40 is a mid-range Android smartphone model that was first released in June 2019. It has a solid build quality that’s made of a plastic body with a 6.3 inch PLS TFT screen with a resolution of 1080 x 2340 pixels that’s protected by Corning Gorilla Glass. At the back of the device is a triple camera system while the front has a 16MP selfie camera. Under the hood, you will find the Snapdragon 675 octa core processor which is paired with 6GB of RAM. Although this is a solid performing device there are instances when certain issues can occur which we will be addressing today. In this latest installment of our troubleshooting series we will tackle the Samsung Galaxy M40 Black Screen of Death issue.

If you own a Samsung Galaxy M40 or any other Android device for that matter then feel free to contact us using this form. We will be more than happy to assist you with any concerns that you may have with your device. This is a free service we are offering with no strings attached. We however ask that when you do contact us try to be as detailed as possible so that an accurate assessment can be made and the correct solution can be given.  

How To Fix The Samsung Galaxy M40 Black Screen of Death Issue

The Black Screen of Death is an issue that can occur on any Android device which is characterized by the screen not displaying anything. This can happen right after the phone has been dropped or it can also be caused by a software glitch. Listed below are the recommended troubleshooting steps that you need to perform for this particular issue.

Make sure the phone is fully charged

The first thing that you will need to do in this case is to make sure that the battery has sufficient charge. This will eliminate the possibility of the problem being caused by a drained battery.

  • Clean the charging port of the phone using a can of compressed air making sure to remove any dirt or debris stuck in it.
  • Fully charge the phone with a charging cord and wall charger that have been tested to work on another device.
  • If the phone does not charge with a wall charger then try charging the device from a computer USB port.

Once the battery is fully charged check if the Samsung Galaxy M40 Black Screen of Death issue still occurs.

Perform a soft reset

Your phone will usually store temporary data to improve its performance. This data however has the tendency of getting corrupted which could be causing this problem. What you will need to do is to refresh the phone software by doing a soft reset. This will usually resolve issue caused by minor software glitches. 

  • Press and hold the Power and Volume down key for up to 45 seconds.
  • Wait as the device restarts.

Check if the Samsung Galaxy M40 Black Screen of Death  issue still occurs.

Start the phone in Safe Mode

There are instances when an app you downloaded can cause this particular issue. To check if this is the case, you will have to start the phone in Safe Mode as only the pre-installed apps are allowed to run in this mode. 

  • Turn the device off.
  • Press and hold the Power key past the screen with the device name.
  • When ‘SAMSUNG’ appears on the screen, release the Power key.
  • Immediately after releasing the Power key, press and hold the Volume down key.
  • Continue to hold the Volume down key until the device finishes restarting.
  • Safe mode will display in the bottom left corner of the screen.
  • Release the Volume down key when you see ‘Safe Mode’.

If your phone screen works in this mode then the problem could be caused by an app you downloaded. Find out what app this is and uninstall it.

Wipe the cache partition 

There are instances when a corrupted system cached data can cause this problem. It’s therefore a good idea to delete this data as the phone will just rebuild this data when it starts again.

  • Turn off the phone.
  • Press and hold the Volume Up key and the Home key, then press and hold the Power key.
  • When the device logo screen displays, release only the Power key
  • When the Android logo displays, release all keys (‘Installing system update’ will show for about 30 – 60 seconds before showing the Android system recovery menu options).
  • Press the Volume down key several times key to highlight ‘wipe cache partition.’
  • Press the Power key to select.
  • Press the Volume down key to highlight ‘yes’ and press the Power key to select.
  • When the wipe cache partition is complete, ‘Reboot system now’ is highlighted.
  • Press the Power key to restart the device.

Check if the issue still occurs.

Perform a factory reset

One last troubleshooting step to consider is a factory reset. This will bring your phone back to its original factory condition. Take note that your phone data will be deleted in the process .

  • Turn off the phone.
  • Press and hold the Volume Up key and the Home key, then press and hold the Power key.
  • When the device logo screen displays, release only the Power key
  • When the Android logo displays, release all keys (‘Installing system update’ will show for about 30 – 60 seconds before showing the Android system recovery menu options).
  • Press the Volume down key several times key to highlight ‘wipe data / factory reset.’
  • Press Power button to select.
  • Press the Volume down key until ‘Yes — delete all user data’ is highlighted.
  • Press Power button to select and start the master reset.
  • When the master reset is complete, ‘Reboot system now’ is highlighted.
  • Press the Power key to restart the device.
  • With no apps installed in the phone, try to check if the issue still occurs.

If the above steps doesn’t fix the problem then you will need to bring the phone to a service center and have it checked as this is most likely caused by a faulty hardware component already. 

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