Does the Galaxy S24 have an SD card slot? No, but here's what ...
It had removed the micro-SD card slot with the Galaxy S6 series, but those came with the next flagships. It was too early for Samsung to remove the micro-SD card slot with the Galaxy S6 series.
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Samsung Galaxy S6 Edge+ SIM Tray Replacement - iFixit Repair Guide
Use this guide to remove or swap the SIM card in your Samsung Galaxy S6 Edge+.