Amazon.com: Samsung Pro Plus 256GB MicroSD Class 10 UHS-I Memory Card for Samsung Galaxy S20 FE 5G, S20 Ultra, S20, S20+, S10, S9 Phone - MB-MD256KA Bundle with Everything But Stromboli Micro
Amazon.com: SanDisk 128GB Ultra Micro SD SDXC UHS-I Class 10 works with Samsung Galaxy S9 Memory Card S9+, S9 Plus (SDSQUAR-128G-GN6MN) with Everything But Stromboli (TM) Card Reader (Class 10 128GB) :
The Best Micro SD Cards for Your Galaxy S9 « Android :: Gadget Hacks
Here are the best microSD cards for the Samsung Galaxy S9 & S9+
MicroSDHC EVO Plus Memory Card w/ Adapter 32GB (2017 Model) Memory & Storage - MB-MC32GA/AM | Samsung US
Amazon.com: One Single SIM Micro SD Card Tray Holder Slot Replacement w/Eject Pin for Samsung Galaxy S9 Plus SM-G965U : Cell Phones & Accessories
Lexar High Performance 64GB MicroSD XC Memory Card 633x UHS-I Class 10 for Samsung Galaxy S8 S9 S10 PLUS + S10e with Mini MemoryMarket MicroSD Memory Card reader - Walmart.com
For Samsung Galaxy S9 / S9+ Plus Sim Tray Micro SD Card Tray holder Slot Replace | eBay