How to fix Galaxy S8 Not Charging properly issue, screen won’t turn on, other issues

Hello Android fans! Today, we bring you some #GalaxyS8 problems. This post addresses some issues that were raised by some S8 users. Specifically, we will be dealing with how to solve S8 Not Charging issue as well as two other related ones. We hope you’ll find this post helpful.

If you are looking for solutions to your own #Android issue, you can contact us by using the link provided at the bottom of this page.

When describing your issue, please be as detailed as possible so we can easily pinpoint a relevant solution. If you can, kindly include the exact error messages you are getting to give us an idea where to start. If you have already tried some troubleshooting steps before emailing us, make sure to mention them so we can skip them in our answers.


Problem 1: Galaxy S8 charger was damaged after accidental drop

Good morning! Okay so i was charging my phone with its original charger when it slipped off the table. The charger itself ended up getting bent when the phone fell. I attempted to bend it back – not smart i know. When i went to see if it still worked in my phone, a piece of the actual charger got stuck in my charger port and i am trying to figure out how to pull it out! Please help! — Vanessa M Echevarria

Solution: Hi Vanessa. The end of the charging cable that connects to the charging port in your phone has delicate metallic contacts and tiny pins. If one or more of these pins were bent or got stuck inside the charging port, that’s probably because the inside of the port itself has been mangled too. Try to use a long-nose pliers and gently pull the damaged charging cable out. If you can’t do it, or if the charging port in your phone was damaged permanently and you can no longer charge via cable, you’ll have to eventually send the phone in so it can be repaired or replaced. In the meantime, you can try to charge the phone wirelessly using the wireless charger that came with it.

Problem 2: How to fix Galaxy S8 Not Charging issue

I bought my Samsung S8 at the beginning of June 2017. Everything has worked fine until about a month or so ago. One day, when I plugged my phone in to the fast charger, as usual, my phone, soon thereafter, shut down/turned off completely. Although it allows me to begin steps to turn it on (I power on, enter my PIN, then my SIM PIN, then my phone PIN again) it will shut down again within seconds. At first this shut down was only once and a while when I plugged it in. Now it is almost every time I plug my phone in.

Also, at the beginning I noticed that I could not turn on my phone until the charge was 100% and the green light was on, then it would finally let me turn on my phone. But now it seems to be going beyond that point. The point to where I am worried that it will never turn on again. Once my phone is allowed to power back up, everything seems fine. At first I thought it was a phone backup or update, but when I look at that info, it will say that the last update was, for example, two days ago. So I know this is not the problem. I’ve been reading through different forums and have not found my exact problem. Per suggestions, I have tried plugging it in to a completely different fast charger with a completely different cable and I still had the same problem.

By the way, my husband has the same exact phone purchased at the same exact time. He uses the same exact cable and charger as I do and has never experienced this problem. Could it be an app? If so, how can I find out? Thank you! Model # SM-G950U1, Android Version – 7.0, Samsung Experience Version 8.1, Android Security Patch Level Nov 1, 2017 Please let me know if you need any of the other numbers. — Mandy

Solution: Hi Mandy. An issue like yours can be a product of a software problem or a hardware malfunction. To know if it’s being caused by an unknown hardware issue, let’s do some troubleshooting.

Clear the cache partition

Android uses a set of temporary files called system cache to load apps and services quickly. Sometimes, the system cache can get corrupted after installing an app or update. To ensure that the system cache is healthy, you should regularly clear the cache partition where this cache is located. Doing so will prompt the phone to build a new cache from scratch, replacing potentially corrupted or outdated ones. A corrupted system cache can lead to issues ranging from minor bugs to frustrating slow downs or app crashes. To wipe the cache partition, follow these steps:

  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 Android logo displays, release all keys (‘Installing system update’ will show for about 30 – 60 seconds before showing the Android system recovery menu options).
  4. Press the Volume down key to highlight “wipe cache partition.”
  5. Press the Power key to select.
  6. Press the Volume down key to highlight “yes” and 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.

Restart your S8 to safe mode

Another possible reason why your S8 charging behavior is erratic can be due to a troublesome app. Apps are built by different developers with different expertise, skill level, and resources. Some may work as intended while others may affect the operating system or other apps due to poor coding. To see if one of the apps is causing the problem, you must restart your S8 to safe mode and observe how it charges.

To restart to safe mode, follow these steps:

  1. Turn the device off.
  2. Press and hold the Power key past the model name screen.
  3. When “SAMSUNG” appears on the screen, release the Power key.
  4. Immediately after releasing the Power key, press and hold the Volume down key.
  5. Continue to hold the Volume down key until the device finishes restarting.
  6. Safe mode will display in the bottom left corner of the screen.
  7. Release the Volume down key when you see Safe Mode.
  8. Uninstall apps that are causing a problem.

When in Safe mode, all third party apps, the ones that you added later on after unboxing the device, will be prevented from loading. This means that only pre-installed apps will be running when your S8 is in safe mode. If the charging problem won’t happen when the phone is in this mode, you can bet one of your apps is the cause. What you need to do in this case is to narrow down the possible troublesome apps. Start uninstalling the most recently installed apps. Make sure to check how charging works after every uninstallation.

Recalibrate the battery

Battery and operating system calibration is your next stop in this troubleshooting series. That if the first two suggestions above won’t work. The aim of this step is to see if Android has lost the ability to detect remaining battery power causing the device to shut down prematurely. Battery calibration re-trains Android by reestablishing a new battery consumption pattern a couple of times. Hopefully, once the recalibration is done, the phone can go back to its normal charging behavior and will now stop shut off randomly.

To recalibrate the battery and Android, kindly follow these steps:

  1. Drain the battery completely. This means using your device until it powers down by its own and the battery level reads 0%.
  2. Charge the phone until it reaches 100%. Be sure to use original charging equipment for your iPhone and let it charge up completely. Do not unplug your device for at least two more hours and also don’t use it while charging.
  3. After the elapsed time, unplug your device.
  4. Perform a warm restart by holding the Power and Home buttons simultaneously until the Samsung logo appears.
  5. Use your phone until it completely runs out of power again.
  6. Repeat steps 1-5.

Perform a factory reset

If the phone continues to charge erratically at this point, you must do a more drastic solution of resetting all software settings back to their factory defaults. A factory state software is generally free of known bugs and of course, power management is validated to work properly. Thus, the software component of charging function is expected to work properly after a factory reset. If it does the opposite and charging continues to be problematic, you need to contact Samsung for additional support.

To factory reset your S8, kindly do the following steps:

  1. Back up data on the internal memory. If you have signed into a Google account on the device, you have activated Anti-theft and will need your Google credentials to finish the Master reset.
  2. From the Home screen, swipe up on an empty spot to open the Apps tray.
  3. Tap Settings > Cloud and accounts.
  4. Tap Backup and restore.
  5. If desired, tap Back up my data to move the slider to ON or OFF.
  6. If desired, tap Restore to move the slider to ON or OFF.
  7. Tap the back button to the Settings menu and tap General Management.
  8. Tap Reset.
  9. Tap Factory data reset.
  10. Tap Reset device.
  11. If you have screen lock turned on, enter your credentials.
  12. Tap Continue.
  13. Tap Delete all.
  14. Set the phone back up but DO NOT INSTALL ANYTHING. Use the phone until it runs out of power again, then observe how charging works.

Contact Samsung for repair or replacement

Finally, if factory reset won’t make any difference at all, you have to get direct intervention from Samsung. At this point, it’s pretty safe to assume that the phone has encountered a hardware error. This hardware malfunction can range from a bad battery, busted power management IC, to other unknown hardware glitch. Since you won’t be able to do hardware diagnostics, you want to let a professional do it for you.

Problem 3: Galaxy S8 screen turns black, won’t turn on

Hello! I am the owner of a Samsung Galaxy S8, and I am in a bit of a bind. Earlier today, 12-12-2017, while in the car with my mother and the map on, my phone suddenly went black. I assumed it locked itself for being idle, but it refused to turn back on. It was at about 65% charge, so it didn’t die. I attempted charging anyways using a spare charger, but it was still unresponsive. This happened at about 5:30 PST and it is now 10:20 as of my sending this to you, give or take. Please help me, and thank you for your time. — Mina De Paz

Solution: Hi Mina. The first troubleshooting step that you should take is to identify the problem. This is done by taking note of the symptoms. There can be two possible problems that can happen in your case:

  • No Power issue
  • No Boot issue
  • Screen malfunction

No Power issue means the phone is totally unresponsive — no LED lights when charging, not making vibrate or sound notifications, not ringing when you call your number, not charging at all.

No Boot issue means that your phone appears to power on, loads the Samsung logo screen, but fails to run Android operating system. It may remain stuck in Samsung logo screen, or trapped in an endless boot cycle, known as boot loop.

Screen malfunction usually occurs during or after the phone suffers physical damage or exposed to liquid or temperature extreme. Basically, the phone still turns on as indicated by LED lights and it still makes sound and vibrate notifications when there’s an incoming message or call.

How to fix No Power issue

For a No Power issue, the only troubleshooting step that you can do is to try to use another set of charging cable and adapter. If the phone remains dead, you can assume that the cause is on hardware level. You’ll need to contact Samsung so it can be repaired or replaced.

How to fix No Boot issue

Solutions for a No Boot issue can vary depending on what caused it in the first place. No boot issues usually happen after a failed update or flashing. It can also be sometimes caused by rooting a device. The general rule is to return the phone’s software to its known working state via master reset or reflashing of firmware back to stock. Sometimes, reflashing the phone’s bootloader/recovery back to stock also helps. Below are the specific general solutions that you should try.

Master reset

  1. Back up data on the internal memory. If you have signed into a Google account on the device, you have activated Anti-theft and will need your Google credentials to finish the Master reset.
  2. Turn off the device.
  3. Press and hold the Volume Up key and the Bixby key, then press and hold the Power key.
  4. 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).
  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 — delete all user data 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.

General steps on how to flash a bootloader

  1. Look for the correct firmware for your phone model and download it. Make sure that you select the right one. It should be the same exact firmware that ran previously on your device. We assume that you list down the firmware version somewhere. If you did not take note of it before, there’s a chance that you may pick the wrong one. As you may know now, using an incorrect firmware can cause complications so good luck with that.
  2. Let’s now say that you have identified the correct firmware. You then want to download it to your computer. The firmware file should have a bunch of files in it like AP_, BL_, CSC_, etc.
  3. Look for the file that starts with a label BL; this should be the corresponding bootloader file for this firmware. Once you’ve identified the bootloader file, copy it to your computer’s desktop or to any other folder that you can easily access.
  4. Proceed with the rest of the flashing procedure using the Odin program.
  5. In Odin, click on the BL tab and make sure to use the bootloader file you’ve identified earlier.
  6. Now, make sure that the “Device Added” status and its “ID:COM box” has turned blue before hitting the START button. This will initiate the flashing of your phone’s bootloader.
  7. Restart the phone once the procedure is finished.

Reflash or remove root

If your phone runs a custom ROM or rooted software, try to see if returning everything back to stock will help.

Screen not working issue

If your phone turns on just fine but the screen stays black no matter how many times you tried to reboot it, you got yourself a screen malfunction. Like in No Power issue, you need to contact Samsung so they can assess the hardware and repair it if necessary.


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Harvey Hisona

Harvey is keen with mobile technology and loves writing about all things mobile. He is passionate in helping technology-challenged people by finding resolution to their issues. Contact me at Email

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