I'm having troubles with a 32 Go Transcend micro SD card (on Samsung Galaxy A5 2016, Android 7.0). When my phone starts, it displays the following notification:

Unsupported SD card
This device doesn't support this SD card. Tap to set up in a supported format.

If I click the notification, it asks me to format the SD card, which I obviously don't want to do.

I tried many things, unsuccessfully:

  • shut down the phone, remove the card, put it back and restart the phone
  • connect the phone to a computer with a USB cable -> doesn't show the SD card, only the phone internal storage
  • remove the card and connect it to a computer using a micro-SD/SD adapter (on two computers, one running Windows 7 and the other running Ubuntu 16.04) -> doesn't show the SD card. I tried with another micro-SD card on both computers to check that the adapter and the SD card reader are OK and it worked.
  • wipe the connectors

So I have no way to access my data.

I don't know if it's relevant, I was running NewPipe when that happened. I just watched a video, and then I couldn't play another one. Then I tried to Samsung Music. I could see the titles but the tracks won't play. So I restarted my phone and saw the error message for the first time.

I'm now running out of ideas...

  • If android or windows does not recognize the card then there is something wrong with it. – Moab May 30 '18 at 18:57
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    Sounds to me like your SD card got tired and let go... It happens, and sadly, that's probably the end of the story. If you have access to a Linux computer, you can often get more information out (check dmesg after attaching the SD card). – Attie May 30 '18 at 18:58
  • At least Android shows an error message. Windows doesn't detect it at all... – hug May 30 '18 at 18:59
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    Bin that card & get the data from your backup. – Tetsujin May 30 '18 at 19:06
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    Of course, which is why I mentioned it. bet you do next time. SD cards have the worst habit of being fine for ages, then suddenly dying. I get through thousands of them for work. Unless you want to spend money on a data recovery company, they're just not worth the effort once they go bad. Bin & swap in a new one. Never, repeat never put the only copy of any data on one. – Tetsujin May 30 '18 at 19:11

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