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 :
Inserting SIM and MicroSD Card in Your Galaxy S7 or Galaxy S7 Edge
For Samsung Galaxy S7 Edge G935 G935f G935fd G935a Original Phone Housing New Sim Card Adapter And Micro Sd Card Tray Holder - Sim Cards Adapters - AliExpress
How to Fix Unsupported SD Card in Samsung Galaxy S7/S8 Issue
How to Use a MicroSD Card on the Samsung Galaxy S7 - YouTube