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Fix moisture detected error in USB-C port on your Samsung phone
If your Samsung phone or other Android device displays a “Moisture detected error”, it’s a safety feature designed to protect your phone from water damage. This warning usually prevents charging through the USB-C port when moisture, humidity, or debris is detected. Fortunately, this issue is easy to fix — and if it persists, Phone Expert Brisbane can help with fast, safe repairs.
What is the moisture detected error?
The moisture detected error is part of Samsung’s built-in safety feature that protects your phone’s USB hardware from short circuits. When moisture is detected in the charging port or on the charging cable, the phone disables power input to prevent corrosion and electrical damage. It can trigger even when your phone is dry due to high humidity or sensor glitches.
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Why your Samsung phone says “Moisture detected in USB port”
The Samsung moisture detected alert typically appears when liquid or detected moisture or foreign material is inside the USB-C port. Some common causes include:
- Exposure to humidity in bathrooms, kitchens, or near pools
- Condensation from temperature changes
- Residual moisture or dust inside the port
- Software errors or outdated firmware
- Corrosion from previous water exposure
This feature is part of your device’s IP code waterproof rating and prevents water damage to the device while charging.
Step 1: Unplug the charger and inspect the USB-C port
Immediately unplug the charger to avoid further issues. Use a torch to check the port for visible debris, dust, or excess moisture. If you see water, gently use compressed air or let it air dry.
Tip: Avoid using rice or a hair dryer — they can push moisture deeper or cause heat damage.
Step 2: Let the phone dry completely
Place your phone on a flat surface in a well-ventilated room. If you’re in humid Brisbane, place it in a sealed container with silica gel or near a dehumidifier. Keep the port facing downwards and wait until it’s completely dry.
Humidity tip: Avoid leaving your phone in the bathroom while showering — even steam can trigger the moisture detection alert.
Step 3: Restart your phone and try charging again
After your phone has dried, restart your phone and connect the charger. Sometimes this resets the Android system and clears the error message. If it still appears, continue troubleshooting.
Step 4: Clear the USB cache and settings
Sometimes the alert persists because of cached data. You can fix it by clearing the USB cache and resetting settings:
- Go to Settings → Apps → USB Settings (or Android System).
- Tap Storage → Clear Cache and Clear Data.
- Restart your phone again.
This step often fixes issues with the moisture alert stuck on your Samsung Galaxy phone.
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Step 5: Try using wireless charging
If your Samsung Galaxy S9 or later supports it, use a wireless charger or charging pad to charge your phone while the port dries. Using wireless charging avoids further sensor interference and keeps your phone powered.
Step 6: Disable fast charging temporarily
In some cases, disabling the fast charging feature helps reset the system and stop the alert. To do this:
- Open Settings → Battery and Device Care → Battery → More Settings.
- Turn off Fast Charging.
- After a few hours, try to charge your phone again.
Once the moisture detected error disappears, you can re-enable fast charging safely.
Step 7: When to visit Samsung Support or a technician
If the warning won’t go away after 24 hours, it may indicate internal corrosion or a faulty sensor. Visit Samsung Support or your local Phone Expert Brisbane service centre for professional diagnosis. Our technicians will:
- Clean the charging port and check for residue
- Inspect the charger port and sensor
- Replace connectors if needed
- Test inductive charging and USB hardware
DIY fix vs professional repair
| DIY Fix | Professional Repair |
|---|---|
| Drying and cache clearing | Full diagnostic with moisture sensor testing |
| May solve temporary issues | Fixes corrosion and faulty hardware |
| Uses household methods | Uses Samsung-certified tools and software |
Prevention tips to avoid moisture detected warning
- Don’t charge your phone immediately after water exposure
- Avoid plugging into the USB port in humid environments
- Clean the charging port regularly with compressed air
- Use official Samsung accessories and cables
- Keep your phone away from direct sunlight or condensation
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Frequently Asked Questions
Yes, once the port is completely dry. Restart your phone and try charging again.
No, it’s designed to protect your phone from damage and corrosion. For recurring alerts, seek service.
Use compressed air or place your phone in a sealed container with silica gel for several hours.
Clear cache, try wireless charging, and contact Phone Expert Brisbane for a same-day checkup.
Need expert help?
Don’t let a simple moisture detected in USB port alert keep you from using your phone. Visit Phone Expert Brisbane or contact our Samsung repair team for quick service. We’ll ensure your phone supports safe, reliable charging again.
