What to do if your Samsung Galaxy S9 is charging very slowly [Troubleshooting Guide and Charging Tips]

Although it seldom occurs to new powerful smartphones to give into battery issues, it doesn’t denote that these devices won’t encounter charging issues at an early stage. There are some factors other than hardware damage or bad battery that can inflict charging errors to occur on your new phone. And these factors that I am referring to are basically software-related like bad updates, software bugs, and rogue apps to  name a few. Busted power sources or incompatible charging paraphernalia are also among the other factors to consider. Here in this context, I will tackle a relevant issue particularly on the new Samsung Galaxy S9 that is charging very slowly. Read on to get some more inputs on why such a problem instigate this early and what options you do have to resolve the underlying cause and get your phone to charge normally as it should.

Before going further, if you found this post because you were trying to find a solution to your problem, then try to visit our Galaxy S9 troubleshooting page as we’ve already addressed most of the commonly reported issues with the phone. We’ve already provided solutions to some of the problems reported by our readers so try to find issues that are similar with yours and use the solutions we suggested. If they don’t work for you and if you need further assistance, fill up our Android issues questionnaire and hit submit.

Troubleshooting Galaxy S9 that charges very slowly

Before you troubleshoot software problems on that might have caused you this trouble, care to check on the following matters:

  • Use the original or Samsung charger to charge your phone. Some third-party chargers are just not compatible with your device. So your phone may be able to charge using them but not as fast as the original charger. The main reasons for this is that the output voltage or power of other chargers may not be the same as that of the Samsung-supplied charger. This is why it is but highly recommended to use only the original charger for your device.
  • Make sure that power source is working. Sometimes, the power source is to blame. As recommended, use a power outlet as your source. While you can use a computer port or other power paraphernalia like power banks to charge your device, the power output from these sources aren’t that much rendered by power outlets. Unless you don’t have any other choice, prefer to use a wall outlet than your computer or power banks when charging.
  • Check and ensure no damage to your charging equipment. Some cables even the new ones could come with minor or major factory defects. It’s possible that what you’ve got is a defective charger so it may be able to charge your phone but not as expected. If you have a spare compatible charger, try to use that charger and see if it works or performs better.
  • Do not use your phone while charging, if possible. It is but normal for any device to take longer time to fully charge when you’re using it while charging. When you use your phone, it means that the processor is working and as the processor works it uses up power. The heavier the usage is, the more power the processor consumes.Needless to say, it will take longer for your phone to reach a hundred percent battery level.

Troubleshoot software problems that might have caused your Samsung S9 to charge very slowly. Here are your options:

First solution: Calibrate the battery on your phone.

Battery calibration is recommended to be done at least 3 times a month to help keep the device battery optimized. By calibrating the battery means allowing the battery to drain completely from normal usage and then recharge the battery until it gets full. When it gets fully charged, use your phone as you usually do until the battery is fully emptied and then charge your phone again until the battery is full. And then you can use your device as you normally do afterwards. Try and see if that helps.

Second solution: Force your Samsung S9 to restart then recharge.

Many cases of charging problems in mobile devices are attributed to software glitches like rogue apps in the background. A recommended potential solution to this is a force restart. That being said, try to force your phone to close and restart while charging. Here’s how it’s done:

  1. Plug your device into its charger and wall outlet.
  2. Press and hold the Power and Volume Down buttons simultaneously for up to 45 seconds.
  3. Release both buttons when the Samsung logo appears.

Let your phone recharge until it gets full. If you see any improvement with the charging duration, then you’re good. Otherwise, you’ll need to try other options.

Third solution: Charge your phone while in safe mode.

Third-party apps that have gone rogue and glitching are usually the ones to blame when it comes to software-related charging problems in mobile devices. If you’re get used to charging your phone without turning it off, there is a chance that these rogue apps drain much power so it would definitely take time for the battery to get fully charged. In this case, you can try booting into safe mode and then charge your phone while running in safe mode. All third-party apps are temporarily disabled in this mode so it would be easier for you to determine whether or not the problem is triggered by these apps. Here’s how to boot your Samsung S9 into safe mode:

  1. Turn your phone completely off.
  2. Press and hold the Power button past the model name screen showing on the screen.
  3. Release the Power button when the Samsung logo appears.
  4. Then immediately after releasing the Power button, press and hold the Volume Down button.
  5. Keep holding the Volume Down button until the phone finishes restarting.
  6. When you see the Safe Mode badge in the bottom left corner of the screen, you can release the Volume Down button.

At this point, try to charge your phone again. If it charges faster while in safe mode, then your next job is to remove the culprit. Try to think of which from your downloaded apps is the trigger then uninstall suspected apps individually. In case you need further assistance, here’s how to uninstall apps on your Samsung S9:

  1. Open the Apps tray by swiping up on an empty spot from the Home screen.
  2. Tap Settings.
  3. Tap Apps.
  4. Tap to select the suspected app you want to uninstall/remove.
  5. Tap Uninstall.
  6. Then tap OK to confirm.

Restart your phone to apply the recent changes.

Fourth solution: Update your phone to the latest software version available.

Software updates contain bug fixes including those that address power and charging problems. That said, try to check for any available update to implement on your Samsung S9. Here’s how:

  1. Open the Apps tray by swiping up on an empty spot from the Home screen.
  2. Tap Settings.
  3. Tap Software update.
  4. Select the option to Download updates manually.
  5. Wait for your phone to check for available updates.
  6. If an update is available, tap OK then Start.
  7. Tap OK when prompted with the restart message.

Wait until your phone boots up completely then use it until the battery reaches to a level that prompts recharging.

Fifth solution: Reset all settings.

Some settings might have been configured to use much power on your phone. If you can pinpoint which from your settings is at fault, then you can have it reverted directly. But if that’s not possible, then you can go for an all settings reset instead. This will reset all settings on your device but will not affect any of your critical data so there’s no need to worry data loss afterwards. Here’s how it’s done:

  1. Swipe up on an empty spot from the Home screen to open the Apps tray.
  2. Tap Settings.
  3. Tap General Management.
  4. Scroll to and tap Reset.
  5. Select the option to RESET SETTINGS.
  6. Tap Reset Settings.
  7. If prompted, enter your device PIN or password.
  8. Tap Reset Settings again to confirm action.

Your device will restart when the settings reset is complete. By then you can proceed with the initial setup prior to using your phone again.

Other options

You may opt for a full system reset if the problem persists and that you strongly believe that it’s a software issue. Just don’t forget to back up all your data and personal information as they will all be deleted in the process as your phone is restored to its factory defaults.

Contact your carrier or Samsung Support for other recommendations and options if none of the prior methods is able to get your Samsung Galaxy S9 to charge faster as it should. If your device is still under warranty, then you should avail for warranty be it for service or repair.

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