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
Samsung EVO 32GB microSDHC UHS-I Memory Card MB-MP32DA/BBY - Best Buy