There are a few ways to open an iPhone backup.
The most common way is to use iTunes on a computer.
First, connect the iPhone to the computer and open iTunes.
Then, select the iPhone in the iTunes sidebar and click the “Summary” tab.
In the “Backups” section, click the “Manually Back Up and Restore” button.
In the “Backup Options” window, click the “Back Up to This Computer” checkbox.
Then, click the “Apply” button.
The iPhone backup will now be …
