If your Samsung Galaxy S25 Ultra displays a moisture detected error or a water drop icon while charging, it means the phone’s charging port has detected moisture or humidity. This feature is designed to prevent damage, but even dry ports can sometimes trigger false alerts.

Solutions

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1. Dry the Charging Port

Excess moisture in the charging port can trigger the error, preventing charging.

Unplug the charger from your phone.
Shake the phone gently to remove any excess water.
Use a soft, dry cloth to wipe the charging port.
Allow the phone to air-dry in a well-ventilated area for at least 30 minutes.
Try charging again.

2. Use a Hair Dryer on Low Heat

A hair dryer can speed up the drying process.

Set the hair dryer to low heat or cool air.
Hold it about 12 inches away from the charging port.
Blow air into the port for about 30 seconds to 1 minute.
Let the phone sit for a few minutes before attempting to charge.

3. Insert a Cotton Swab

Cotton swabs can help absorb residual moisture inside the port.

Take a dry cotton swab and gently insert it into the charging port.
Move it around carefully to absorb any moisture.
Remove the swab and wait a few minutes before testing the charger.

4. Use Isopropyl Alcohol

Isopropyl alcohol evaporates quickly and can help remove moisture.

Dip a cotton swab in 99% isopropyl alcohol (avoid using water-based solutions).
Gently clean the charging port.
Allow the port to air-dry for at least 10 minutes before charging.

5. Restart Your Phone

Restarting can help clear any temporary sensor glitches.

Press and hold the Power button.
Tap Restart and wait for the phone to reboot.
Once restarted, try plugging in your charger.

6. Try a Wireless Charger

If the moisture error persists, using wireless charging is an alternative.

Place your phone on a Qi-compatible wireless charger.
Ensure the charger is plugged into a power source.
Wait a few seconds to see if the phone starts charging.

7. Clean the Charging Cable and Adapter

A wet or dirty cable can also trigger the error.

Inspect the charging cable and adapter for any moisture or debris.
Wipe them down with a dry cloth.
If dirty, clean the metal contacts with a soft brush or alcohol wipe.
Try a different charging cable and adapter to see if the error disappears.

8. Clear USB Cache

Corrupted USB settings can cause the moisture detection warning to stay on.

Open Settings.
Go to Apps > Tap the three-dot menu.
Select Show System Apps.
Scroll down and select USB Settings.
Tap Storage > Clear Cache.
Restart your phone and check if the error is resolved.

9. Disable Moisture Detection Temporarily

Disabling this feature can allow charging if you’re certain the port is dry.

Plug your charger into the phone.
When the error appears, swipe down and go to Settings.
Tap Battery and Device Care > Battery.
Select More Battery Settings.
Turn off Fast Charging and USB Power Delivery.
Try charging again.

10. Charge in Safe Mode

Safe Mode can disable third-party apps that may interfere with charging.

Press and hold the Power button.
Tap and hold Power Off until Safe Mode appears.
Select Safe Mode and let the phone restart.
Plug in your charger to check if it works.
Restart your phone normally after testing.

11. Check for Software Updates

A software bug can sometimes cause the moisture detection feature to malfunction.

Open Settings.
Tap Software Update.
Select Download and Install.
If an update is available, install it and restart your phone.

12. Contact Samsung Support

If none of the solutions work, there may be hardware damage that requires professional repair.

Visit Samsung’s official support website.
Schedule a repair appointment at a Samsung service center.
If your phone is under warranty, check if repairs are covered.

These solutions should help resolve the moisture detected error and allow your Galaxy S25 Ultra to charge normally. If the problem persists, avoid using the charging port until a professional technician inspects it to prevent further damage.

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