Files App, what storage format does it support?

The Files app is an app that lets you browse, organize, and manage files stored on your device, iCloud Drive, and external storage devices. The Files app supports different storage formats forexternal storage devices, such as USB drives and SD cards. According to Apple, the supported formats are EX-FAT, MS-DOS (FAT), Mac OS Extended (HFS+), and APFS1. These formats allow the Files app to read and write files on the external storage devices. The Files app does not support NTFS, which is a format used by Windows. NTFS is not compatible with the Files app, and the Files app can only read files from NTFS-formatted devices, but not write or modify them2. To use an NTFS-formatted device with the Files app, you need to reformat it to one of the supported formats using a Mac or PC. References: Connect external storage devices to iPhone - Apple Support, The Complete Guide to Using External Storage on iOS and iPadOS - Gizmodo