The key used to encrypt the data on the sd card is.
Galaxy s8 adoptable storage.
In dual sim version of galaxy s8 and s8 slot 2 in the sim card tray can be used for either a sim card or a micro sd card but not both.
How to enable adoptable storage on galaxy s8.
But samsung blocked this feature and therefore you can only use micro sd card in galaxy s8 and s8 as portable storage not internal storage.
Open the cmd command terminal and type adb shell.
Make a note of the microsd card disk id.
To do this type sm list disks in the cmd window.
If you want to use it as internal memory you need to format micro sd and encrypt it.
Press enter then find the id of the microsd card in your galaxy s8.
The disk id will appear.
Since android marshmallow adoptable storage i e using micro sd card as internal storage has been introduced.
You can use micro sd card in galaxy s8 and s8 as portable storage to expand the storage if you want to keep a lot of offline media files with you in the phone.
Samsung and google doesn t support adoptable storage because it s way slower than built in flash storage especially on s8 that features ufs 2 1 and causes unstable slow system performance.
Connect your galaxy s8to your computer or laptop.
Galaxy s8 s8 does not support adoptable storage feature.