Hello. As some people know, I just changed my phone: I switched from Fairphone 4 under FairphoneOS (Android 15) to Fairphone 6 under /e/os (Android 15).
My SD card was first recognized normally, then I realized that I didn’t have write rights to it.
Then I realized that each time I started the phone, the system stopped recognizing it and offered me a format. So that’s what I did: I also had a backup of my data. After formatting the diagnosis was the same: impossible to write and new formatting proposal at startup.
My SD card could have a problem but I still find it curious since it worked perfectly before…
Has anyone encountered this problem? Do you have any advice for me?
Thank you in advance 
I assume it’s a small one with no physical slider to block it.
Here is some link to advice how to remove write protection attribute if you can physically put the card in the card reader using your PC or MAC:
https://www.wikihow.com/Remove-Write-Protection-on-an-SD-Card
I don’t know if it helps but might be worth trying.
Also - does another phone has the same problem with the card?
On sandisk help page I found this one too:
Mobile Device Settings
Some mobile devices have a feature to lock the microSD card.
Check with your mobile device manufacturer for instructions to unlock it.
If the SD card is fairly old, and if you can reproduce it being non-writeable/ non-formattable with different devices, this would look like a common SD card end of life.
Somewhen the controller on the card may decide to make it non-writeable, and that’s it then. No hint or guide from the internet or obscure downloadable low-level format tool will bring it back. Over the years several of such cards have accumulated for me, waiting for the magic fix I didn’t find yet or for me stopping being lazy and finally destroying them physically (because the data is still readable).
3 Likes
Thank you for your answer. I din’t test the SD card on more devices but it works good on my old Fairphone 4.
