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“Moisture detected” on a Samsung phone: what it means

The water-drop warning stops a Galaxy phone charging through its USB-C port. Sometimes it is real moisture, sometimes lint or corrosion. Here is how to clear it safely.

1 min readBy the Wepairs team

A woman using her smartphone in the rain

Many Galaxy phones check the USB-C port for moisture before charging. If they detect liquid or a short across the pins, they show a water-drop icon and pause wired charging. It is a protective feature that stops damage to the port and the phone.

Common causes

  • Rain, sweat or a bathroom that left moisture in the port
  • Lint and pocket debris packed into the port
  • Early corrosion on the port pins
  • A damaged cable or charger that confuses the check

What to try

  • Unplug the cable and let the phone dry in a well-ventilated place
  • Gently tap the phone with the port facing down
  • Look into the port with a torch for lint; do not dig with metal objects
  • Try a different, known-good cable
  • If your model supports wireless charging, use it while the port dries

When the warning will not clear

If the phone is completely dry and the warning keeps returning, the port may be corroded or damaged. A charging port repair or cleaning usually solves it. Avoid forcing a charge with workarounds, because charging into a genuinely wet port can cause further damage.

Further reading

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