Thanks for the quick reply!Android’s built-in format tool can do FAT32, but only for drives up to 32 GB. Larger drives often get forced into exFAT or NTFS, so you may need a third-party app such as - https://play.google.com/store/apps/details?id=com.mixapplications.usbtools. You might also be able to do it with the Samsung My Files app.