Last updated: 2023-11-28 by Danu

Samsung has already released One UI 4.1.1, One UI 5, and One UI 6 to some of their flagship smartphones, including the Samsung Galaxy S series, Z series, and A series.

Users who have updated their Samsung Galaxy smartphone to the latest software version have reported they are experiencing fast charging not working after the update. According to them, the fast charging feature worked before installing the new update, which means the problem must be the update.

On Samsung Galaxy smartphones, two types of fast charging modes are available based on the charging speed. One is “fast charging” (also known as adaptive fast charging) which charges Samsung devices at 15W, and the other one is “superfast charging”, which charges Samsung devices at 25W-65W power. In this guide, we are talking about these two charging modes.

If “fast charging” or “superfast charging” on your Samsung Galaxy smartphone not working after the update, read this guide to know why it happens and how you can fix it. Everything in this guide applies to these Samsung devices:

• S23, S22, S21, S20 and S10 series phones.
• Note 20 series phones.
• S20 series phones.
• Note10 series phones.
• Z Fold 2 and Z Fold 3.
• Galaxy A71 and A53.
• Z Fold and Z Flip series phones.
• S10 series phones.
• Note9 and Note8 series phones.
• S9 and S8 series phones.
• A70, A50, A51, A52 5G, A42 5G, A32 5G, A13, A12, and A02s phones.

Editor’s note: We created these instructions using a Samsung Galaxy S23 running Android 13. Depending on your device’s software version, some steps and menu positions may look slightly different.

Why Samsung’s Fast Charging Doesn’t Work on Some Devices After Software Update?

Starting from One UI 4, Samsung has changed how the charging state and estimated time are displayed on their smartphones. This is the most common reason why users do not see their smartphone getting charged on “fast charging” or “superfast charging” modes, even though their devices are actually getting charged as before.

This change also raises a new question, which is, “How users can make sure their Samsung Galaxy smartphone is charging on ‘fast charging’ or ‘superfast charging’ mode?” 

How to Know If Your Samsung Galaxy Smartphone is Getting Charged on “Fast Charging” or “Superfast Charging” Mode

Samsung has already explained this to one of the questions a user has asked on the Samsung community. Here is how the charging states and estimation times are displayed after the update on your Samsung Galaxy smartphone:

On the home screen (in the notification panel):

1. When you plug the charger in, the charging mode (“fast charging”, “superfast charging”) will be displayed for five (5) seconds. Example: “superfast charging started”
2. After that five seconds, your phone will only display “charging,” regardless of the charging mode/state. This means even if the device is charging at “fast charging” or “superfast charging” mode, you will only see “charging.”

On lock screen:

1. When you turn on the screen by pressing the power button, it will show the charging icon and the amount of time it takes to charge the phone for only five (5) seconds.
2. After that time, you will only see a charging icon on the lock screen.

If you were not aware of this information, then it means your phone should be getting charged properly and correctly. Although, there are a few things you can do in order to make sure there isn’t any issue preventing your Samsung Galaxy smartphone from getting fast charged. Let’s see what those are.

Method 01: Clear the System Cache

Whenever a new software update is installed, it is mandatory to do a “wipe cache partition” on Samsung smartphones to clean the previous system cache generated by the previous Android system. 

The reason is, that when a new version is installed, the previous cache becomes outdated and causes various issues. This can also be a reason why Samsung’s “fast charging” is not working after a software update.

To clear the system cache, first, you have to boot your device into recovery mode. Let’s see how you can do that;

1. Power off your Samsung Galaxy smartphone.
2. Plug the USB cable into the phone and connect it to a power source (a charger/ a laptop/a power bank, etc.) 
3. Then, press and hold the “power-up button” for a few seconds until the recovery menu is loaded. Then release the power button.

If the above method doesn’t work, use this method instead;

1. Power off the device and plug the charge in.
2. Press and hold the “power + volume up buttons” together until you see the recovery menu loaded up.

Once the smartphone is booted into the recovery mode/menu, follow the below steps to clear the system cache:

1. Use the volume down key and navigate (highlight) to the “Wipe cache partition”.

2. Press the power button.
3. You will see a confirmation window. Highlight the “Yes” option and press the power button again to start clearing the system cache.

4. Once the cache is cleared, you will see the recovery menu again. Navigate to “Reboot device now” and press the power button to restart the device.

Once your Samsung Galaxy smartphone is restarted, plug in the charger see if the device now charges, and display the charging state in the notification panel.

Method 02: Check the Settings

Sometimes, the “fast charging” and “superfast charging” modes can get turned off after installing a software update update. If you haven’t checked if these modes are still turned on, then it is time to do so. Here is how:

1. Go to Settings.
2. Tap on “Battery and device care”.
3. Tap on “Battery”.
4. Tap on “More battery settings”.
5. Scroll down and check if the “fast charging” and/or “superfast charging” modes are turned on.

Resource: Software Update Trackers for Samsung Galaxy Smartphones

You can use the below update trackers to check which update has been released and what new features and bug fixes they bring to your Samsung Galaxy smartphone:

• Samsung Galaxy S23 Software Update List (S23, S23+, S23 Fe, S23 Ultra)
• Samsung Galaxy S22 Update Tracker 2022 (Continuously Updating)
• Samsung Galaxy S21 Software Update Tracker 2022 (Cont. Updating)
• Samsung Galaxy S20 Software Update Tracker 2022 (Cont. Updating)