How to move apps to SD card on Galaxy S9 and Galaxy S9+ - SamMobile
How to Mount an SD Card on Samsung Galaxy: 14 Steps
Amazon.com: SanDisk 256GB Ultra Micro SD SDXC UHS-I Class 10 works with Samsung Galaxy S9 Memory Card S9+ Plus (SDSQUAR-256G-GN6MN)Bundle with (1) Everything But Stromboli Card Reader : Electronics