Galaxy S9 - How to insert sim card and microSD card | Samsung New Zealand
Galaxy S9 Plus - Dual SIM & SD Card Work Simultaneously on Samsung Galaxy S9 Plus Duos - YouTube
Best MicroSD Cards for the Galaxy S9
256GB Micro SD Card Memory For SAMSUNG GALAXY S9,S9+,S8,S8+,S8,S7 Active Mobile | eBay
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)
One Single SIM Micro SD Card Tray Holder Slot Replacement w/Eject Pin for Samsung Galaxy S9 Plus SM-G965U