Backup iPhone using flash drive
I haven’t been backing up using iCloud because I don’t have enough space on the iCloud. My old phone is damaged. Can I use the flash drive to restore my images?
iPad Pro, iPadOS 15
If your Images are on the Flash Drive, they can be copied onto an iPhone yes through the Files App.
If the images are on the old iPhone and it cannot be accessed, then you will not. be able to get them onto the flash drive.
Link-> Connect external storage devices to iPhone - Apple Support
