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Question Encrypted SD Card unbearably slow

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disor21

New member
Jul 9, 2021
2
0
I got the A22 5G and I like it apart from one huge issue.

I encrypted my sd card (256 GB) and transfer rates are unbearably slow.
If I copy a 2 GB file from the internal storage to the SD card it will start ok (20 MB/s) but this is likely only the cache.
Soon it slows down to ultimately 10-50 kB/s which is unusable, copying was not finished after 15 min.

When I decrypt the card again everything is as fast as expected. I checked the SD card on another phone, no speed problems.
Back into the Samsung and encrypted it is unusably slow again.

Did anybody have a similar issue?
 

disor21

New member
Jul 9, 2021
2
0
I returned the phone.
In case somebody else runs into this issue I'm afraid I could not determine the cause.
I tried adopting the SD card as internal storage via adp commands but Samsung has even blocked this now.
One can partition the SD card as internal storage still but it is not possible to trigger the migration.
This means any normal application will still only see the internal phone storage and not the sd card's.
 

blackhawk

Senior Member
Jun 23, 2020
7,007
2,507
Clear system cache.
Low level format the card, then format it again with the phone.