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How to Fix Samsung Galaxy S9 SD Card Issues

The Samsung Galaxy S9 and Galaxy S9+ are the flagship phones in 2018. While you can hardly find mistakes with the amazing design, camera and hardware specifications, the phones do suffer from multiple software issues including Wi-Fi, SD card and improper notification. Let’s explore the solutions on how to fix Samsung Galaxy S9 SD card issues so that you can enjoy that extra space.

See also: How To Fix Samsung Galaxy S9 Bluetooth Issues

How to Fix Samsung Galaxy S9 SD Card Issues

Method 1: Reboot Your Galaxy S9 Phone

Smartphones are more like computers these days and a simple reboot could sometimes fix the most complex errors of them all. You can still restart your device, but shutting it down and switching it back on again has its own advantages. When you undergo this process, the cache memory will be completely cleared and the Android OS will be freshly loaded into it, allowing it to possibly detect your memory card.

  1. Press and hold the power button
  2. A couple of seconds later, a pop-up screen will emerge
  3. Tap the power off and let your phone shut down completely
  4. Wait for at least 30 seconds and press and hold the power button again
  5. The Android OS will boot up

Method 2: Unmount Your MicroSD card properly and then remove it

Most users have reported on Samsung forums that their phone is unable to detect their SD card. Some may be using a 64 GB or 128 GB card from their older smartphones, while others might have purchased a new one. There are many possibilities that could have led to this issue but unmounting the microSD card is a good way to start off and check if the card would read.

  • Head to the Settings menu on your Galaxy S9 phone
  • Scroll down and find the Storage options
  • Tap on it and open Storage Settings
  • Select Unmount and you will see an onscreen notification that unmounts your card

Once you have successfully gone through the process, proceed to use the SIM ejector tool to remove the card and inspect the card physically. Check if there are any deep scratches in the chip area and also make sure your SD card is not broken or damaged in any way. Physical damages will make it difficult for the motherboard to recognize the memory chip.

Method 3: Unmount and Mount your SD Card without removing it

An SD card may not function as intended due to many reasons and corrupted memory spots could be one of them. While the final option would be to buy a new one, you should probably confirm whether it is your Galaxy S9+ or the S9’s software that is causing the problem in the first place.

Follow the steps mentioned above to safely unmount your SD Card but stop at the last section because you don’t have to physically remove it from the slot.

  • Once you have successfully unmounted the card, wait for 30 seconds to 1 minute.
  • Make sure to close the settings window during your wait period
  • Head back to Settings and find Storage
  • Tap on SD card option and then on Mount SD Card
  • Your phone might take a couple of seconds to process and mount the storage again

Method 4: Check the Storage Size and Manufacturer of Your MicroSD Card

The flagship Samsung phones are great in terms of hardware because they can support external storage cards up to 400GB which is a massive number. However, not all manufacturers and microSD card models are supported and when you increase the storage, it might lead to detection issues. Instead of trying to find how to fix Samsung Galaxy S9 SD card issues, you should first check the model of the product, its manufacturer and compatibility with the latest flagship phones.

  • Check the read and write speed of the card; as an attempt to push it, manufacturers may go beyond the industry standard numbers
  • Use the same SD card in different devices and see if they get detected to confirm if they are compatible with smartphones
  • Get a replacement chip from the seller to see if it works and is detected by your Galaxy phone

Method 5: Do a Complete Formatting of your Memory Card

Be it a new SD card or an old one, formatting it completely and using it with your Samsung Galaxy S9 smartphone might actually make it work. Before you do so, it is important to know that all your data will be completed erased.

Tips to Format your MicroSD Card

  • Upload all your phone’s photographs to Google photos in full resolution and unless you have tons of them, the space available should be enough
  • Check if the songs and movies stored in your card have backups on a PC
  • Videos stored in apps like Netflix, Amazon Prime and Apple Music should be downloaded again as there is no way to back them up
  • If you have a spare storage or a big hard disk, transfer the entire content but don’t replace it after formatting

Formatting Procedure

  • Open the Settings page on your Galaxy S9 or S9+ phone
  • Scroll down to find the Storage option
  • Open SD card and select Format
  • The process might take a couple of minutes to be complete and your data will be fully erased

Older SD cards might be much easier to detect when they are formatted and fresh. Unless there is a software issue, your card should be detected by the phone now, allowing you to use the extra space available.

Method 6: Check Samsung’s Official Site for the List of Compatible SD Cards

After you have completed all the above-said steps, if the micro SD card wouldn’t work, consider these following methods. Unmount and mount the card in a different smartphone to see if it works. You can also plug it into the SD card reader found in laptops or a desktop computer to see if it can detect the same. If it doesn’t detect the external storage, the problem is probably with the card and not with your Samsung Galaxy S9 smartphone.

Before you purchase a new SD card which is the obvious solution to the problem, visit the official Samsung website to find a list of compatible memory cards and find them with an online retailer. It should help you fix the issue.

Method 7: Factory Reset Your Smartphone (Warning! You Will Lose All Your Data)

The final option is to factory reset your Galaxy S9 smartphone by following the steps below. When you do so, you will lose every data stored on the device except for the ones saved in your cloud account.

  • Open the Settings page on your Galaxy S9
  • Find General Management option
  • Tap to open Reset options
  • Tap on Factory Data Reset

Most bugs associated with a phone can be solved with a factory reset. Once you do it, make sure to download the latest software updates from Samsung. They are essential to fix any identified issues and to ensure your phone works as intended.

Final Words

Knowing how to fix Samsung Galaxy S9 SD card issues should help you solve the problem on your own through one of the methods mentioned here. The company has officially acknowledged all the problems reported by users and are working on multiple software updates to fix them. If the problem lies with your SD card, you have to fix it on your end to make it work.

  1. Hi,
    I had problems with read/write issues starting from the two updates around February time.
    Nothing appeared to have changed, apart from there now being multiple notifications that I’d not got write access to my SD card. There was still stuff in the SD card, but I couldn’t add items to it.
    Checking it in my PC, it showed that nothing was wrong with it, but after two minutes back in the phone, back came the notifications that it needed write permissions.
    WeFix were sent out by Samsung, who still couldn’t find anything wrong with the phone, and about half an hour after they left, back came the notifications.
    The solution?
    Backed up the files from the old SD card to my PC, phoned my carrier up to say that it was a problem with the SD card and as Samsung have a one year warranty on SD cards, could I have a new one please? – popped it into the phone and it’s worked fine ever since.
    I reckon therefore that it’s a problem with any Android updates that get pushed out and mess up the workings of your phone.

  2. My sd card all of a sudden after a phone update does not read on phone or computer I had over 1000 photos on in tried every thing tips said to do

    1. Bonjour.
      J’ai le même soucis que vous, mon S9 ne reconnait plus ma SD depuis qu’il y a eu la dernière mise à jour de mon téléphone. Le souci c’est que mon ordi ne lit pas ma carte et j’ai plus de 2000 photos dessus. Avez vous réussi à obtenir des solutions ? Si oui, pourriez vous m’aider svp.
      Je vous remercie d’avance.

  3. My Note 9 won’t recognize my Samsung Micro SD since the update 7 days ago. I this happening to others? WHAT’S THE FIX? WHAT IS SAMSUNG DOING ABOUT IT? ANYONE HAVE AN ANSWER?

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