Amazon.com: Samsung 256GB Micro SDXC EVO Plus Memory Card with Adapter Works with Samsung Galaxy S7, Tab S7+ Tablet, A21s Smartphone (MB-MC256KA) Bundle with (1) Everything But Stromboli SD, TF Card Reader :
Samsung A21S how to put Sim card and SD card - YouTube
Gelöst: Apps auf SD-Karte verschieben - Samsung Community
Samsung Galaxy A21/A21s: How to transfer data from internal storage to micro SD card? - YouTube
Sim Card Tray Slot For Samsung Galaxy A21s A217F A217M A217N Original Phone New Black SIM Micro SD Card Holder Adapter + Pin - AliExpress