PSA: The 5G Galaxy S10 does not have a microSD slot - SamMobile
Amazon.com: E-REPAIR SIM Micro SD Card Tray Holder Slot with Rubber Waterproof Replacement for Samsung Galaxy S10 and S10 Plus (Single Sim Version, Silver) : Cell Phones & Accessories
SIM Card Tray + SIM Card Tray / Micro SD Card Tray for Samsung Galaxy S10 Lite SM-G770 (Blue)
For Samsung Galaxy S10 S10 Plus S10+ S10e S10 Lite Sim Card Reader Tray Micro Sd Memory Card Holder Slot Flex Cable Repair Parts - Mobile Phone Flex Cables - AliExpress
64 GB Memory Card For Galaxy S10 Lite Smartphone Kingston Micro SD Card 64GB | eBay
16/32/64/128/256]GB Micro SD Card Memory For SAMSUNG GALAXY S10 Mobile | eBay
Amazon.com: SanDisk 256GB SDXC Micro Ultra Memory Card Works with Samsung Galaxy S10, S10+, S10e Phone Class 10 (SDSQUAR-256G-GN6MN) Bundle with (1) Everything But Stromboli Multi slot SD and Micro Card Reader :
Best microSD cards for the Samsung Galaxy S10 family of smartphones
How to Install a SIM or MicroSD Card in Galaxy S10 / S10+ - YouTube
Amazon.com: 32GB Micro SDHC EVO Plus Bundle Works with Samsung Galaxy S10, S10+, S10e Phone (MB-MC32) Plus Everything But Stromboli (TM) Card Reader : Electronics
Best microSD cards for the Samsung Galaxy S10 family of smartphones