How To Fix Samsung Galaxy S9 Irregular Charging Detected Error

The #Samsung #Galaxy #S9 is a flagship smartphone released last year which has become popular among consumers. This device has several outstanding features which include  a 5.8 inch Super AMOLED display, a single 12MP rear camera which captures excellent quality photos and videos, a Snapdragon 845 processor combined with 4GB of RAM, and a 3000 mAh battery just to name a few. Although this is solid performing device there are instances when certain issues can occur which we will be addressing today. In this latest installment of our troubleshooting series we will tackle the Galaxy S9 irregular charging detected error.

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How To Fix Samsung Galaxy S9 Irregular Charging Detected Error

Problem: Hi, Just got a new Samsung S9 and the phone charges fine using the wall charger, but when I use the USB port on my Kenwood car stereo, I get an ‘Irregular Charge’ message on my phone and an ‘Android Error’ message on my stereo readout. I had a Samsung JV that charged fine through this stereo. Is it because of the quick charging tech on the new phone that I can’t charge through my stereo? I don’t get it. Help!

Solution: Before performing any troubleshooting steps on this phone it’s best to make sure that it is running on the latest software version. If an update is available then I suggest that you download and install it first.


The first thing you should do when you get an irregular charging detected error is to clean the charging port of the phone using a can of compressed air making sure that any dirt or debris stuck in it is removed. You should also do the same with the Kenwood USB port. When charging the phone you should try to use a different USB cord to eliminate the possibility of the problem being caused by a faulty cord. In case the issue still persists then you should proceed with the additional troubleshooting steps listed below.

Perform a soft reset

A soft reset which is usually done when a phone becomes unresponsive but is also recommended in this particular case as it will refresh the software.

  • Press and hold the Power and Volume down key for up to 45 seconds.
  • Wait as the device restarts.

Once the phone restarts check if the issue still occurs.

Check if the issue occurs in Safe Mode

An app you downloaded in your phone could be causing this problem. To check if this is the case you will need to start the phone in Safe Mode since only the pre-installed apps are allowed to run in this mode.

  • Turn the phone off.
  • Press and hold the Power key past the model name screen appearing on the screen.
  • When SAMSUNG appears on the screen, release the Power key.
  • Immediately after releasing the Power key, press and hold the Volume down key.
  • Continue to hold the Volume down key until the device finishes restarting.
  • When Safe mode appears in the bottom left corner of the screen, release the Volume down key.

In case the issue does not occur in this mode then it’s likely that the problem is caused by an app you downloaded. Find out what app this is and uninstall it.

Wipe the cache partition of the phone

The phone system cached data is used to speed up the access to your phone apps. Sometimes this data can get corrupted which results in issues occurring on the device. To check if a corrupted cached data is causing the problem you will need to wipe the cache partition of the phone from the recovery mode.

  • Turn off the phone.
  • Press and hold the Volume Up key and the Bixby key, then press and hold the Power key.
  • When the Android logo displays, release all keys (‘Installing system update’ will show for about 30 – 60 seconds before showing the Android system recovery menu options).
  • Press the Volume down key to highlight “wipe cache partition.”
  • Press the Power key to select.
  • Press the Volume down key to highlight “yes” and press the Power key to select.
  • When the wipe cache partition is complete, “Reboot system now” is highlighted.
  • Press the Power key to restart the device.

Check if the issue still occurs.

Perform a factory reset

One last troubleshooting step you should consider is a factory reset. This will revert your phone back to its original factory condition. Make sure to backup your phone data before doing the reset as it will be deleted in the process.

  • Turn off the phone.
  • Press and hold the Volume Up key and the Bixby key, then press and hold the Power key.
  • 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).
  • Press the Volume down key several times to highlight ‘wipe data / factory reset’.
  • Press Power button to select.
  • Press the Volume down key until ‘Yes — delete all user data’ is highlighted.
  • Press Power button to select and start the master reset.
  • When the master reset is complete, ‘Reboot system now’ is highlighted.
  • Press the Power key to restart the device.

Do not install any apps in your phone after the reset. Try to check first if the issue still occurs.

In case the issue persists even after performing the troubleshooting steps listed above then this is most likely caused by a faulty hardware component. You should bring the phone to a service center and have it checked.

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