Amazon.com: Samsung Pro Plus 512GB MicroSDXC Memory Card for Samsung Phone Works with Galaxy S20 FE 5G, S20 Ultra, S20, S20+, S10, S9 Phone MB-MD512KA Bundle with Everything But Stromboli Micro SD
Here are the best microSD cards for the Samsung Galaxy S9 & S9+
10 Pcs New For Samsung Galaxy S9 Plus S9+ G960 G965 Single Dual Sim Card Tray Holder Reader Micro Sim Sd Card Tray Slot Parts - Sim Cards Adapters - AliExpress
Aocarmo Single/Dual Metal Plastic Nano Sim Card Tray Micro SD Slot Holder For Samsung Galaxy S9 / S9 Plus S9+|SIM/SD Card Trays| - AliExpress
Galaxy S9 - How to insert sim card and microSD card | Samsung New Zealand
128GB Micro SD Memory Card For Samsung Galaxy S9 9+ Plus Mobile Phone 7426996623192 | eBay
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