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 Galaxy A21S SM-A217M/DS 4G LTE 64GB + 4GB Ram LTE USA w/Four Cameras (48+8+2+2mp) Android International Version (GSM Only, Not CDMA) (Blue) - Walmart.com
Wasana Mobile - Specification overview Samsung Galaxy A21s is a Single SIM (Nano-SIM) or Dual SIM (Nano-SIM, dual stand-by) Phone from Samsung. Device runs on Android 10, One UI 2.0 powered by
Amazon.com: Memory Card for Samsung A20e, A20s, A21s, A70s, A42, A51, A52, A71, A01 Smartphone 32GB Class 10 UHS-1 High Speed - Digi Chip Brand : Electronics
Samsung Galaxy A21s : How to Insert SIM & MicroSD Card - YouTube
Samsung A21S how to put Sim card and SD card - YouTube
How to Insert Nano SIM & SD Cards in Samsung Galaxy A21s – Extend Memory & Connect with Network - YouTube