Samsung Galaxy S9 Memory Card SanDisk 64GB Ultra Micro SD SDXC UHS-I Class 10 works with S9+, S9 Plus (SDSQUAR-064G-GN6MN) with Everything But Stromboli (TM) Card Reader (64GB) : Electronics
What memory card for the Samsung Galaxy S9, S9 Plus, Note 9? | CameraCreativ.com
Here are the best microSD cards for the Samsung Galaxy S9 & S9+ - 9to5Google