Galaxy Note 8 failed to turn on back on, battery maintenance tips

Hello everyone! Welcome to the latest troubleshooting article for Samsung newest flagship, the #GalaxyNote8. This post covers two common issues for any smartphone and how to address them. We’ve only been receiving very few similar cases for the past weeks so we assume not a lot of Note 8 users are experiencing this problems…yet.

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.

Below are specific topics we’re bringing for you today:

Problem 1: Galaxy Note 8 failed to turn on back on, battery maintenance tips

I’ve only experienced this once (hopefully the only time) but my phone turned off with no warning and I could not turn it back on. Holding the power button didn’t work. Holding the Bixby + Power button didn’t work. Holding Volume Up + Power button didn’t work. logged onto Samsung’s website and chatted with a tech and we started with holding the Volume Down button + Power button down. There were more steps including holding Volume up + Bixby + Power, but I can’t remember everything we did. I hope that what little information I’ve provided helps someone else. — Rob Zieman

Solution: Hi Rob. Although the Galaxy Note 8 is the latest addition to Samsung’s list of high end devices and supposedly the most advanced in its class, it’s not perfect. Although we may never know what happened to your device when it failed to boot back up normally, situations like this can happen from time to time. In some cases, it may be an unknown software glitch while in some, due to a hardware fault.

Galaxy Note 8 soft reset

If you take care of your phone properly and you don’t usually mess with the software by installing root software or by flashing non-official software, you should be able to fix the problem by doing a simple solution called soft reset. This is a way to revive a non-responsive Galaxy phone by simulating a “battery pull.” The term originates from a better “era” when manufacturers were still making devices with removable battery packs. Right now, especially with newer Galaxy S and Note devices, battery packs are integrated with the motherboard, making it hard for users to remove and even replace the battery themselves. Since detaching a computer device (yes your Note 8 is a computer) from a power source is still the simplest way to refresh the system, Samsung has to devise a way to make it happen on their phones with non-removable battery packs. To simulate a battery pull in your Note 8, you now need to do the following:

  1. Press and hold the Power and Volume Down buttons until the device powers off (approx. 10 seconds). Let the phone load Maintenance Boot Mode for several seconds.
  2. From the Maintenance Boot Mode screen, select Normal Boot. You can use the volume buttons to cycle through the available options and the lower left button (below the volume buttons) to select. Allow up to 90 seconds for the reset to complete.

The steps above are useful if you found yourself stuck with a totally unresponsive Note 8. Keep in mind though the soft reset may not work if your phone has been physically damaged, has battery issues, or exposed to water. Soft reset is only helpful in cases wherein the device, which is otherwise working normally before, fails to turn back on normally. If your phone has been physically impacted and won’t respond at all, that’s a totally different story and may require advanced repair.

Galaxy Note 8 cache partition wipe

While we don’t anticipate boot problems with normally working Note 8 devices this early, it’s good if you can regularly wipe the cache partition once every few months. This will allow the phone to constantly update the system cache, minimizing potential bugs. It can be done safely without fear of losing user data so we highly recommend it when you encounter any form of firmware, content/app, or unexplained software glitch. Here’s how to do it:

  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 green 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 several times to highlight wipe cache partition.
  5. Press Power button to select.
  6. Press the Volume down key until ‘yes’ is highlighted and press the Power button.
  7. When the wipe cache partition is complete, “Reboot system now” is highlighted.
  8. Press the Power key to restart the device.

Be suspicious when it comes to apps

Apps are the lifeblood of all smartphones. Imagine having a powerful phone such as your Note 8 but without any apps to use. You’ll most likely have to use it like an old-school personal computer by using the built-in browser in accessing your social networks or doing online shopping. With apps, it’s more convenient to do anything and there seems to be an app for almost every activity we can think of! But with that convenience comes the cost.

Not all apps that makes our digital life so easy nowadays are built with the same expert skill and resources. A lot of apps that can be downloaded are poorly built, with a good number of them malicious or developed for not-so-legit purposes. Android viruses and malware are now spread primarily by apps. If a user is not careful what app to install, it’s only a matter of time before an issue can happen. In some cases, bad apps steal personal information while others act as backdoor to allow the developer to install more malicious apps in the system. Some apps are plain buggy, which can sometimes affect other apps or the core function of the operating system.

If you tend to install app without checking whether it comes from a reputable developer, now is the right time for change. Avoid installing apps unless you absolutely need it. Remember, the more apps you install, the higher the chance bugs can develop. Apps you haven’t used in the last two weeks must not be that important and must go. We know this can sound boring especially with such a powerful hardware at your disposal but being very selective is the only real preventive step that you can do to avoid problems.

Take care of the battery

Most boot- or power-related issues are caused by a faulty battery. To prevent suffering the fate of a lot of novice Android users, you must ensure that you take care of your phone’s battery. Remember, you have a Lithium-based battery which loses capacity the moment it left the factory. So even if you’re not using your phone, it gradually degrades. The more you use it, the faster this degradation becomes. Don’t worry though, as long as you take care of your device, the battery should last for at least 2 years before eventually conking out completely.

Below are some of the things that can extend the life of the battery:

    • Lower screen brightness.
    • Keep screen turned off when you’re not using the phone. This is done by fine tuning screen timeout.
    • Use dark themes. The less colorful the screen and theme, the less the phone burns energy.
    • Turn off Always On Display under Settings>Display.
    • Keep the number of apps low.
    • Keep screen resolution low. The higher the screen’s resolution is, the hungrier the graphics chip becomes, which also means faster battery consumption.
    • Turn off Edge lighting if you don’t use it by going under Settings>Display>Edge screen.


  • If you’re not a fan of S Pen or its gimmicks, just turn them off. Do away with sound notifications and vibrate when using the S Pen. The power saved may be small but if you use the S Pen regularly throughout the day, they can add up.


Problem 2: Galaxy Note 8 Battery usage feature not working

The Device Maintainance of my Note 8 Under Battery seems not working well since it only says “learning usage patterns.” So, i don’t get the estimated battery life. It’s already 6 days and no changes. I already did everything. I restart my phone, power off, then on update everything, wiped cache but still no changes. Maybe you can help on how to fix it. — Lubinto25

Solution: Hi Lubinto25. Battery usage under Settings>Device maintenance>Battery usually takes data between a complete charge cycle, that is when the phone’s battery level goes from 0% to 100%. If you haven’t tried it yet, we suggest that you see if you can get Battery usage feature to work by recalibrating the battery. Here’s how:

  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. Restart the device by pressing and holding the Power and Volume Down buttons for about 10 seconds.
  5. Use your phone until it completely ran out of power again.
  6. Repeat steps 1-5.

If battery recalibration won’t work, try a factory reset by doing these steps:

  1. Create a backup of your important files.
  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 green 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.

To avoid having Factory Reset Protection problems following a factory reset, be sure to remove your Google account first. Here’s how:

  1. From the Home screen, swipe up on an empty spot to open the Apps tray.
  2. Tap Settings > Cloud and accounts.
  3. Tap Accounts.
  4. Tap Google.
  5. Tap on your Google ID email address if multiple accounts are setup. If you have multiple accounts setup, you will need to repeat these steps for each account.
  6. Tap 3 dot icon.
  7. Tap Remove account.


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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.

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