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 offers free 256GB microSD with new Galaxy S7 in February | Mashable
Best Memory Cards for Samsung Galaxy S7 and Galaxy S7 Edge - MyMemory Blog
Amazon.com: Professional Ultra SanDisk 64GB Samsung Galaxy S7 MicroSDXC card with CUSTOM Hi-Speed, Lossless Format! Includes Standard SD Adapter. (UHS-1 Class 10 Certified 80MB/s) : Electronics