Amazon.com: SanDisk 32GB Ultra Micro SD SDHC UHS-I Class 10 Memory Card (SDSQUAR-032G-GN6MN) works with Samsung Galaxy S9, S9+, S9 Plus with Everything But Stromboli (TM) Card Reader : Electronics
SanDisk Ultra PLUS 256GB microSDXC UHS-I Memory Card SDSQUSI-256G-ANCMA - Best Buy