How to fix a Samsung Galaxy S9 Plus that is charging very slowly (easy steps)

Charging issues in mobile devices as depicted by slow charging or no charging symptom can be attributed to hardware damage if not software glitches and bugs. In some cases, the problem is tied to a faulty battery, defective charger, or busted power outlets in use. Highlighted in this context are standard solutions and helpful charging tips for Samsung Galaxy S9 Plus owners who are dealing with charging problems, particularly slow charging issue. Read on and find out what to do if your Samsung S9 is charging very slowly.

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 Plus 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.

Before you troubleshoot software issues that might have caused your device to charge very slowly, check and do the following:

  • Use only the original (Samsung-supplied) charger. Make sure you are using the original charger when charging your phone as the amperage on chargers can differ. If you need to replace your charger, choose an alternative charger with the amperage that is appropriate or compatible with your device.
  • Charge your phone from a power source. The power source or where you plug in your device will likewise affect the charging time. As recommended, charge your device directly from a power outlet as it charges your phone faster than plugging it into a laptop computer or other power accessories. Also ensure no damage to any of your charging equipment, charging port, and power source.
  • Don’t use your phone while charging. It’s expected for the charging time to take longer if  you simultaneously charge and use your device.
  • Quit all background apps while charging. While these apps are in standby mode, they’re still running in the background thus consuming power. The more apps you left in standby mode, the longer it would take for the battery to become fully charged. If possible, power off device while charging.

If the problem persists, begin troubleshooting software-related issues on your Samsung S9 Plus with these workarounds:

First solution: Soft reset.

A soft reset or device restart can help remedy minor software glitches that might have halted your phone’s charging system from performing at its best. This won’t delete any of your personal information or critical data from your phone’s internal storage so no need for backups. For starters, here’s how a soft reset is done on your Samsung S9 Plus:

  1. Press and hold the Power button.
  2. Tap the option to Power off.
  3. Tap Power off again to confirm.
  4. After about 30 seconds, press and hold the Power button again until your phone boots up.

Wait until your phone reboots, then use it until its battery life is reduced to a percentage level that prompts recharging.

Second solution: Check battery usage and manage rogue apps.

There are apps that used a lot of your battery so if you’re charging your phone while it’s turned on, there’s a chance that these apps consume the battery way faster than your phone recharges. To check and manage these apps, follow these steps:

  1. Swipe up on an empty spot from the Home screen to launch the Apps tray.
  2. Tap Settings.
  3. Tap Device management.
  4. Navigate to the Battery section then see which from your apps has to most number of power consumption.

If you find any unusual battery consumption by a certain app, manage your apps to lessen power consumption or rapid battery draining. If necessary, you can uninstall rogue apps from your device to prevent them from causing conflict.

Third solution: Update to the latest Android version available.

Software bugs can likewise cause the same trouble and as they can inhibit the charging system from performing at its usual pace. And one effective solution to this is through implementing the latest update on your device. Updates contain bug fixes that address existing issues on certain devices thus keeping your phone up to date is recommended. Here’s how to check and install new (OTA) update available for your Samsung S9 Plus:

  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 updates.
  6. If an update is available, tap OK then Start.
  7. Read the next message prompt then tap OK to reboot your device and apply the new changes from the recently installed update.

With your phone system updated, do some test charging and see how it performs with the latest Android platform.

Fourth solution: Wipe cache partition on your Samsung S9 Plus.

If you’ve managed to charge your phone up to 50 percent or higher, try to do a wipe cache partition to rule system cache issues out from the possible triggers. This also helps clear up your phone’s internal memory for better and faster performance. Should you wish to give it a shot, then here’s how it’s done:

  1. Turn off your phone.
  2. Simultaneously press and hold the Volume Up button, Bixby (Home) button, and the Power button for a few seconds.
  3. Release all three buttons when the Android logo appears.
  4. Wait for the Android system recovery menu to show up on your screen.
  5. Press the Volume Down button several times to scroll to and highlight Wipe Cache Partition from the given options.
  6. Press the Power button to confirm selection.
  7. Press the Volume Down button to highlight Yes, then press the Power button to confirm selection.
  8. Wait until the wipe cache partition is finished. When it’s done, the Reboot system now option is highlighted.
  9. Press the Power button to reboot your phone.

Charge your phone again afterwards and see if there are improvements.

Fifth solution: Reset your phone (master reset).

This would be the last option for you to try on if none of the previous methods is able to fix the problem. Complex system errors and glitches that might have messed up your phone’s charging function are typically rectified in the process. However this reset would cause data loss. If you think it’s worth a shot, then go ahead and perform these steps to back up and reset your Samsung S9 Plus:

  1. Back up your phone data.
  2. Swipe up on an empty spot from the Home screen to open the Apps screen.
  3. Tap Settings.
  4. Tap General management.
  5. Tap Reset.
  6. Select the Factory data reset option.
  7. Scroll to the bottom of the screen then tap Reset.
  8. Select the option to DELETE ALL.
  9. If prompted, enter your credentials for screen lock and Samsung account verification.
  10. Tap Confirm to continue.
  11. Wait for the reset to finish and your device to reboot.

Plug your phone into a power source and let it recharge. See if it’s still charging very slowly or not anymore. If this doesn’t help either, then consider repair options. The battery might have been busted and so can no longer hold a charge.

Repair options

Consider taking your phone to a nearest Samsung service center if the problem persists after performing all prior workarounds. There might some hardware-related issues that need to be dealt with to get your Samsung Galaxy S9 Plus charge normally.

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