Galaxy S8 Guides

How to fix Galaxy S8 moisture problem?

Got "Check port, moisture has been detected... "? Here is the solution to the Galaxy S8 moisture problem!

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Galaxy S8 moisture problem can occur for any phones, even the phone is not in contact with water!

When you have the moisture problem in Galaxy S8 or S8+, you cannot charge the phone through USB cable.

This Galaxy S8 how-to guide explains the causes of Galaxy S8 moisture problem and shows you the solution for such a moisture problem in Galaxy S8 and S8+.

What is Galaxy S8 moisture problem? Isn’t Galaxy S8 waterproofed?

If you Galaxy S8 or S8+ was in contact with water, the USB port (multipurpose USB Type C port) in the bottom (see Galaxy S8 and S8+ layout) may be wetted.

Samsung equipped Galaxy S8 and S8+ with a humidity/moisture sensor to detect moisture buildup in the charging port.

Once the sensor detects the moisture is higher than a preset level,  it will believe you get the Galaxy S8 moisture problem.

When you try to connect this Galaxy S8 or S8+ with moisture problem to the charger, the phone will refuse to charge the battery and you will get a warning as shown below:

Check port

Moisture has been detected. To charge your device, make sure your charger/USB port is dry.

What is Galaxy S8 moisture problem?

Preventing Galaxy S8 or S8+ from charging when moisture is detected in the USB port is a preventative measure to prevent more corrosion.

It is also a security measure.

Please note, Galaxy S8 moisture problem has nothing to do with waterproofing feature in Galaxy S8 and S8+.

The USB port is not sealed in Galaxy S8 and S8+. It is safe even if the USB port is immersed in water (less than 1.5m).

But water, especially seawater or swimming pool water may cause considerable corrosion if you do not rinse and dry the port timely.

Does it mean

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Charge Galaxy S8 battery

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Charge Galaxy S8 batteryEverything you need to know about charging Galaxy S8 battery: what chargers can be used to charge Galaxy S8 battery, how to use a wall charger, wireless charger or fast wireless charger to charge the battery in Galaxy S8 and S8+, how to disable fast charging or fast wireless charging in Galaxy S8 and S8+, and how to properly charge Galaxy S8 battery.

Samsung Galaxy S8 and S8+ use a non-removable battery, which can only be replaced at Samsung service center.  It is impossible to carry a spare battery for Galaxy S8 or S8+.

So, it is important to charge Galaxy S8 battery properly to let the battery serve you at least one to two years.

What chargers can be used to charge Galaxy S8 battery?

In your Galaxy S8 (or S8+) box,  you can find the adaptive wall charger (and the USB cable).

Of course, you can use other chargers to charge Galaxy S8 battery.

Namely, you can use any of the 4 types of chargers to charge the battery in Galaxy S8 and S8+:

  • adaptive wall charger (fast charger) included in the Galaxy S8 box;
  • standard USB wall charger;
  • wireless charging pad; or
  • fast charging wireless charging pad.

Adaptive wall charger (fast charger)

The bundled wall charger in the box is an adaptive charger, which can adjust its output based on feedback from the phone.

In other words, the adaptive wall charger will automatically adjust the charging power to offer fast charging.

For Galaxy S8 and S8+, the adaptive wall charger can charge Galaxy S8 battery at 9v 1.67A when the battery level is lower than about 60%.

When battery level is higher than about 60%, the wall charger will automatically switch charging voltage to 5V and charging current  up to 2A.

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