Amazon.com: MEMZI PRO 128GB Memory Card Compatible for Samsung Galaxy M31, M21, M11, A01, A71, A51, A41, A31, A21, A11 Cell Phones - microSDXC 100MB/s Class 10 A1 V30 with SD Adapter :
Amazon.com: Samsung 256GB Micro SDXC EVO+ Plus Class 10 Memory Card for Samsung Phone Works with Galaxy A11, A31, A41, M31 Cell Phone (MB-MC256KA) Bundle with 1 Everything But Stromboli SD &