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How to read an USB flashdrive on a Samsung S9? I saw online that some OTG adapter is required. I want to know if there are other options requiring only an app or something.

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    When I got my S9, an OTG adapter came with it. youtu.be/KOzvjhCtdo4?t=23. Another alternative is getting a drive with built-in OTG support and USB-C connector. – Duane Dibbley Dec 2 '18 at 21:11
  • But nothing happen inserting a flashdrive with that – yngabl Dec 2 '18 at 21:22
  • @DuaneDibbley you were right – yngabl Dec 2 '18 at 21:22
  • I'm running LineageOS on mine, so I can't say what the stock rom does. When I insert a USB flash drive with the OTG connector that came with the phone, I don't get any message box or any indication at all that the drive was mounted. However, when I check Storage in settings, it's there, and It's also visible and browsable in the file manager. N.B. If you write anything to the drive, don't forget to unmount it before physically disconnecting it. That's done from storage settings. – Duane Dibbley Dec 2 '18 at 21:29
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An OTG adapter should be included with the Galaxy S9. If you insert the male connector into your device's USB port, and a flash drive into the adapter's female connector, the drive should be automatically mounted. You may not get any clear indication that this happened, however if you check storage settings, it should be there. It should also be visible and browsable in whatever filemanager you're using.

Don't forget to unmount the drive before physically disconnecting it. This is done in storage settings. Unmounting makes sure all cached transactions are flushed. Technically this should be done every time, but it's especially important if you've written anything to the drive. If you don't do this, you may lose data, as it's only written to cache, and never flushed to the drive.

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