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How to fix S9 moisture detected bug

How to fix Galaxy S9 moisture detected error, opens apps by itself or keeps freezing

We’ve seen an increasing number of #GalaxyS9 users reporting moisture detected error on their devices for the past few weeks so this post is dedicated to them. We hope you’ll find our suggestions helpful.

Before we proceed, we want to remind you that if you are looking for solutions to your own #Android issue, you can contact us by using the link provided at the bottom of this page. When describing your issue, please be as detailed as possible so we can easily pinpoint a relevant solution. If you can, kindly include the exact error messages you are getting to give us an idea where to start. If you have already tried some troubleshooting steps before emailing us, make sure to mention them so we can skip them in our answers.

Problem #1: How to fix Galaxy S9 moisture detected error

Hi Guys. My Hubby has a Samsung S9 and at night it sits on the microwave to charge. The other night the error message came up – ‘Water detected in the charging port’. We thought this was very strange because the phone has not been near any water… but it’s been really hot and humid, so thought that might be the issue… so put the phone and charger cable in rice for 24 – still receiving error message. Used a hair dryer for 10 minutes on the phone and charger cable – still receiving the error message. Any suggestions of what to do next – at a loss?

Solution: “Moisture detected” error is supposed to be Samsung’s way of alerting a user not to charge the device because the charging port may be wet but we’ve seen some cases in the past that this is not true. There were those who, like you, reported their water resistant Galaxy device like the S7, S8, S8 Plus, Note8, S9 and S9 Plus showing moisture detected error even when the phone was nowhere near water at all. That’s when we realized that this error can also be tripped by other factors and not just by water or liquid.

Dry the device properly

Keep in mind that the phone does not have self-drying capability so even if there’s a tiny amount of liquid or moisture in the charging port, the phone may sense it and trigger the moisture detected alarm. When dealing with this situation, we suggest that you do the obvious first — dry the phone. Because moisture sensor is only located in the charging port area, that’s where you have to focus first. Wipe the entire phone with clean, soft cloth, then help it dry the charging port properly. Tap the charging port area with a dry cloth. If you happened to expose the phone in salt water, make sure that you wash it first with fresh water to avoid salt from accumulating in some areas like the microphone, earpiece, or external speaker. When drying your S9 after wiping it with clean, soft cloth, pat the earpiece in front, microphone and external speaker at the bottom. You want to remove as much water as possible. You can also shake the phone vigorously to dislodge any water in the charging port.

Inspect the charging port

And speaking of the charging port, it’s the one area in your S9 that’s exposed to water. This port if specially designed to resist water from accumulating but it won’t hurt if you can double check. To see relatively easily inside, try to use a magnifying tool to see if there’s liquid that remains. You should also be able to see if there’s any foreign object like a grain of wet sand still inside that might be tripping the sensor. This happens from time to time after bringing a device to a beach. If there’s any debris or lint in the port, try to blow it out using a hair blower or a gentle sucking action of a portable vacuum cleaner.

Do not stick anything to the charging port to remove any debris or lint as that might damage the metallic contacts.

Factory reset

Many users were able to successfully false moisture detected errors in the past by doing a factory reset. Although there’s no official word from Samsung about it, some units appear to have this error constantly pop out after a system update. We’re thinking there may be some inefficient codes in some of these updates that causes the liquid sensor to trip. If you haven’t factory reset your device yet, be sure to do it by following these steps:

  1. Back up data on the internal memory using Smart Switch. If you have signed into a Samsung account on the device, you have activated Anti-theft and will need your Samsung credentials to finish the master reset.
  2. Turn off the device.
  3. Press and hold the Volume Up key and the Bixby key, then press and hold the Power key.
  4. When the green Android logo displays, release all keys (‘Installing system update’ will show for about 30 – 60 seconds before showing the Android system recovery menu options).
  5. Press the Volume down key several times to highlight ‘wipe data / factory reset’.
  6. Press Power button to select.
  7. Press the Volume down key until ‘Yes — delete all user data’ is highlighted.
  8. Press Power button to select and start the master reset.
  9. When the master reset is complete, ‘Reboot system now’ is highlighted.
  10. Press the Power key to restart the device.

Get professional help

For cases that aren’t fixed by factory reset or by drying the phone, the most probable reason is hardware malfunction. In many such cases, a defective charging port is the cause, usually brought about by careless plugging and unplugging of a charging cable. If your phone continues to show moisture detected error even after you factory reset it, you should send the phone in so Samsung can examine it and repair it.

Problem #2: What to do if newly factory reset Galaxy S9 continues to show moisture detected error

Hi, I’m getting the ‘moisture detected’ warning, although I didn’t get my phone wet. Perhaps it was humid. I’ve tried everything, including factory reset, but it’s still there. When I restart the phone and plug in the charger after the lights go out completely, I can leave in the charger and the warning doesn’t come up. But as soon as I unplug the charger, the moisture warning comes back. If I restart the phone with the charger plugged in, it won’t restart. It just vibrates slightly, and tries to boot again and fails. Please help! This is so frustrating.

Solution: As mentioned above, if you nothing changed even after you’ve wiped the phone back to its defaults (factory reset), there may be an issue with its hardware, particularly the charging port. Bring the phone to you local Samsung Service Center and let them check the charging port. There’s no magic software trick for a broken charging port so repair is your only resolution in this regard.

Problem #3: Galaxy S9 opens apps by itself, keeps freezing

To start with my Samsung Galaxy S9 is not working properly. IT automatically opens apps which I do not click. It freezes itself although when I close it and open it then it unfreeze. Added to this when I touch to move the app it moves back to its original position automatically. I have Factory reset it 4 times. After some hours of the factory reset the problem returns Please look into it and provide a solution. I have also wipe/cleared cache from the screen which appears after pressing the Power key plus the volume up key and the bixby key. SOLVE THIS ISSUE AS QUICKLY AS POSSIBLE.

Solution: We don’t think bad software is the reason why your S9 performs poorly and opens apps erratically. Android troubleshooting at a user level is simple and straightforward. If you’ve already exhausted all software troubleshooting (you did), then the problem is most probably beyond your ability to fix. By doing a factory reset, you’re basically returning all software information to their defaults. This means your phone should start working normally right after a factory reset because factory state software is stable and known to work.

If the phone initially works normally after a factory reset but such issues you mentioned returns later on, there may be an issue with one of your apps. If this is the case, you can try to isolate the cause by restarting the device to safe mode, then identifying the culprit.

Safe mode

First, you want to know how to boot your S9 to safe mode:

  1. Turn the device off.
  2. Press and hold the Power key past the model name screen.
  3. When “SAMSUNG” appears on the screen, release the Power key.
  4. Immediately after releasing the Power key, press and hold the Volume down key.
  5. Continue to hold the Volume down key until the device finishes restarting.
  6. Safe mode will display in the bottom left corner of the screen.
  7. Release the Volume down key when you see Safe Mode.

To identify which of your apps is causing the trouble, you should boot the phone back to safe mode and follow these steps:

  1. Boot to safe mode.
  2. Check for the problem.
  3. Once you’ve confirmed that a third party app is to blame, you can start uninstalling apps individually. We suggest that you begin with the most recent ones you added.
  4. After you uninstall an app, restart the phone to normal mode and check for the problem.
  5. If your S9 is still problematic, repeat steps 1-4.

Remember, the safe mode troubleshooting step only covers the possibility of a bad app situation. If your performs poorly or if the issues remain whether or not the phone is on safe mode, then you can assume bad hardware is to blame.

Let Samsung repair your S9

Was your phone dropped before? Was it exposed to water, heat, or temperature extremes? If one of these things happened, then stop wasting your time looking for a software solution because you can’t fix hardware problem by changing the software. For example, if your phone’s screen is cracked or shattered, its digitizer may be broken causing the device to open apps by itself. Freezing issues due to an app or software is usually fixed by a factory reset, or by removing the app that causes it. If your phone continues to freeze on safe mode, then that means there’s no third party app issue at all. If freezing remains after a factory reset, when there are no apps added to the system yet, it’s a clear indicator that you have bad hardware. Let Samsung fix the device if you want to resolve the issue permanently.

 


Engage with us

If you are one of the users who encounters a problem with your device, let us know. We offer solutions for Android-related problems for free so if you have an issue with your Android device, simply fill in the short questionnaire in this link and we will try to publish our answers in the next posts. We cannot guarantee a quick response so if your issue is time sensitive, please find another way to resolve your problem.

If you find this post helpful, please help us by spreading the word to your friends. TheDroidGuy has social network presence as well so you may want to interact with our community in our Facebook and Google+ pages.

How to fix a Galaxy S9 keeps restarting and showing moisture detected warning [troubleshooting guide]

Today’s post handles three common issues that a lot of users encounter. Of special importance for us today is the case about a #GalaxyS9 that has a persistent random restarting and moisture detected issues. Together with two other related issues, we provide you the necessary steps that you can follow to tackle them head on. We hope that this short guide will help you address similar issues on your own Galaxy S9.

Before we proceed, we want to remind you that if you are looking for solutions to your own #Android issue, you can contact us by using the link provided at the bottom of this page. When describing your issue, please be as detailed as possible so we can easily pinpoint a relevant solution. If you can, kindly include the exact error messages you are getting to give us an idea where to start. If you have already tried some troubleshooting steps before emailing us, make sure to mention them so we can skip them in our answers.

Problem #1: Galaxy S9 keeps restarting and showing moisture detected warning

Dear sir/madam. I am using Samsung Galaxy S9. My phone was working until few days back. My device is having a restart problem . My phone automatically restarts and shows the moisture warning message after it turns on. I cleaned the charging port, let it dry. it didn’t work. I was still having the same problem. I even reset the device thinking it was due to some application or any software that’s causing it. The problem was gone for 2 days but i still had the same restart problem. I removed my SD card, SIM card but neither of the tricks worked. i couldn’t find exact problem and solve it. PLEASE suggest me what the problem may be and what i should do. Thankyou! — Bikal Shrestha

Solution: Hi Bikal. Hardware problems tend to show symptoms consistently even after a factory reset so we don’t think the main reason for your issue is bad hardware. The most likely problem is either apps or content that you add to your device. We don’t know what apps you install but if the problem was gone for 2 days right after a factory reset, then you can rule out the possibility of hardware malfunction. Instead, try to focus on a possible bad app scenario or even a malware situation. Malware is one of the common reasons why problems persists even after a factory reset. That’s because users tend to re-install the same set of apps after a factory reset mistakenly thinking that the issue should not return. Malware in Android devices are usually spread via apps so if one of the apps you re-installed is a bad one, there’s no amount of factory reset that you can do to fix it. As long as you keep on reinstalling the same set of apps after a factory reset, the issue will return again and again.

The best thing that you can do right now is to run your S9 to safe mode and observe it. In this mode, all third party apps and services will be blocked, including the app that had infected your device. If your S9 works normally on safe mode and stops restarting on its own, that’s a clear sign of a bad app issue. Make sure to let your S9 run in safe mode long enough to allow you to notice if the problem occurs or not. We say you let it be on safe mode for at least 48 hours. You will still be able to use the internet on your pre-installed web browser, send and receive texts, and make and receive voice calls. If the problems you mention here won’t happen during the observation of 2 days, that’s an obvious indication of a bad app problem.

To boot your device to safe mode:

  1. Turn off your S9.
  2. With your S9 off press and hold the Power key past the model name screen.
  3. When “SAMSUNG” appears on the screen, release the Power key.
  4. Immediately after releasing the Power key, press and hold the Volume down key.
  5. Continue to hold the Volume down key until the device finishes restarting.
  6. Safe mode will display in the bottom left corner of the screen.
  7. Release the Volume down key when you see Safe Mode.

If your S9 turns on to safe mode but not on normal mode, that’s a clear sign that one of your apps is indeed problematic. To know which app is causing a problem, follow these steps:

  1. Boot to safe mode.
  2. Check for the problem.
  3. Once you’ve confirmed that a third party app is to blame, you can start uninstalling apps individually. We suggest that you begin with the most recent ones you added.
  4. After you uninstall an app, restart the phone to normal mode and check for the problem.
  5. If your S9 still refuses to power back on, repeat steps 1-4.

Problem #2:  Galaxy S9 randomly restarts for short durations of time

Hello. My Galaxy S9 that I purchased just over a week ago keeps turning off randomly for short durations of time. I have to manually turn it back on and when following your websites’ instructions and turning it on in safe mode, it is still turning off intermittently. I just switched from iPhone to this and feel pretty upset that I might have to deal with Samsung’s notoriously bad customer service department. Is there anything I can do short of a factory reset? I would prefer to not lose all of my settings and information I’ve been working for this past week to gain. Thanks for your time. — Walker Walker

Solution: Hi Walker. Any smartphone that restarts on its own may have a software or hardware problem. The restart symptom is just a sign that something’s wrong with it. In your case, you’ll have to do more troubleshooting steps than just boot the device to safe mode. If the issue is present even when it’s on safe mode, that doesn’t mean it can’t be a software issue. Nor does it necessarily mean that it’s a hardware issue either.

If you don’t want to do a factory reset right away, try to remember what you did differently before the issue started. Did you install a new app? Was there an app or system update that you downloaded? Did you drop the device? Was it water damaged? These are just some of the relevant questions that may cause a problem like this. If the previous action that you did immediately can be undone, make sure to do so. For example, if you recently rooted the device, try to unroot it and see how it works afterwards.

If you can’t figure out what may be the cause of the problem, try to see if resetting all its settings will help. It simulates similar effect to a factory reset without actually going through the hassle of clearing your personal data. Here’s how it’s done:

  1. Open Settings app.
  2. Tap General Management.
  3. Tap Reset.
  4. Tap Reset settings.
  5. Tap RESET SETTINGS button to confirm.

If that won’t fix the problem either, you need to factory reset your device. We know for a fact that an S9’s factory state software won’t have a random restart issue so if the problem remains after wiping your phone, that only means one thing — hardware malfunction.

To factory reset your S9:

  1. If still possible, make a backup of your personal data.
  2. Turn off the device.
  3. Press and hold the Volume Up key and the Bixby key, then press and hold the Power key.
  4. When the green Android logo displays, release all keys (‘Installing system update’ will show for about 30 – 60 seconds before showing the Android system recovery menu options).
  5. Press the Volume down key several times to highlight ‘wipe data / factory reset’.
  6. Press Power button to select.
  7. Press the Volume down key until ‘Yes — delete all user data’ is highlighted.
  8. Press Power button to select and start the master reset.
  9. When the master reset is complete, ‘Reboot system now’ is highlighted.
  10. Press the Power key to restart the device.

Remember, factory reset is the final step in software troubleshooting. If your S9 continues to restart on its own, contact Samsung for repair or phone replacement.

Problem #3: Verizon Galaxy S9 stopped charging even after a factory reset

Like others who have written to you my Galaxy S9 suddenly stopped accepting a charge, even from the factory charger. After trying different cords, chargers and cleaning the contacts, I contacted Verizon.  They suggested a factory reset which I did. The problem persisted through the reset. The phone works fine but it wont take a charge. One Verizon tech support person let slip that this seems to be happening since Verizon’s last update!  So Verizon’s update has bricked my phone! Outrageous! Any ideas what to do other than buy a new phone? Thanks. — Resource3

Solution: Hi Resource3. We don’t work for Verizon and we don’t specifically keep track of Verizon devices having problems like the one you’re experiencing so we can’t say whether the representative who told you the issue started an update was saying the truth or not. What was said is not far-fetched though and there’s a possibility that it can happen. Apple did confirm a few months back that they intentionally slowed their older iPhones in order to prevent them from taxing old batteries and causing problems. A similar tactic can be used by Samsung or any carrier as well but we can’t categorically say if Verizon is doing it.

The interesting thing here though is that it won’t make sense at all since you have a Galaxy S9 and it’s pretty much new. There’s even no new replacement for it from Samsung so it’s not sensible for Verizon to intentionally rig their updates to cause the S9 to slow down or become problematic. That means your theory that Verizon may be forcing you to get a replacement may be a bit out of the question.

The thing is, we don’t think this is a software issue at all. If factory reset did not do anything, then there must be a hardware issue causing the trouble. It may be the charging port, battery, power management IC, or some general issue with the board. To know where the real issue lies, you need to let a professional examine the phone. We can’t tell you what it is by simply reading what you’re telling us. We suggest that you send the phone to Samsung Service Center so they can run some tests on it. If necessary, they will replace the phone for you.

 


Engage with us

If you are one of the users who encounters a problem with your device, let us know. We offer solutions for Android-related problems for free so if you have an issue with your Android device, simply fill in the short questionnaire in this link and we will try to publish our answers in the next posts. We cannot guarantee a quick response so if your issue is time sensitive, please find another way to resolve your problem.

If you find this post helpful, please help us by spreading the word to your friends. TheDroidGuy has social network presence as well so you may want to interact with our community in our Facebook and Google+ pages.