There are a few ways to move your iPhone backups to an external drive. You can use iTunes, iCloud, or a third-party app.
If you want to use iTunes to move your backups, you’ll need to connect your iPhone to your computer and open iTunes. Then, click on the device icon in the upper-left corner of the iTunes window. Next, click on the “Summary” tab and click on the “Backups” section. Click on the “Back Up Now” button and wait …