USB Backup vs Cloud Backup: Which Should You Use for Phone Photos?
Cloud and USB backups protect you from different disasters. What each is good at, where each fails, and why the strongest setup uses both.
File Manager vs VaultDrive: Backing Up Android Photos to a USB Drive
Android can copy folders to a USB drive by itself, and does it better than iPhone can. Here is where the manual route still falls short, and what changes with a dedicated backup app.
Files App vs VaultDrive: Backing Up iPhone Photos to a USB Drive
iOS can already copy photos to a USB drive, free. Here is exactly where that stops working at library scale, and what a dedicated backup app does differently.