Amazon.com: 128GB SanDisk Ultra UHS-I Class 10 80mb/s MicroSDXC Memory Card works with Samsung Galaxy S8, S8 Plus, S8 Note, S7, S7 Edge, S5 Active, S4 Cell Phones with Everything but Stromboli
Samsung Galaxy S8 - Full phone specifications
Amazon.com: Samsung Micro SDXC 512GB EVO Plus Memory Card with Adapter Works with Samsung Tab S8, Tab A8 10.5 (2021), Tab S8+, Tab S8 Ultra (MB-MC512) Bundle with 1 Everything But Stromboli
Amazon.com: Professional Ultra SanDisk 400GB Samsung Galaxy S8 MicroSDXC Card with Custom Hi-Speed, Lossless Format! Includes Standard SD Adapter. (A1/UHS-1 Class 10 Certified 100MB/s) : Electronics
How to Install Micro SD Card Samsung Galaxy S8 & Increase Space - YouTube
How to install SD and SIM card into Samsung Galaxy S8 - YouTube
How to Insert / eject SD Memory card - Samsung Galaxy S8/S8+ - YouTube