No, you cannot undo the deletion process once started. Therefore, make sure to backup your important data before deleting everything off your iPhone.
In conclusion, deleting everything off an old iPhone is a crucial task to prevent personal data from falling into the wrong hands. By following the methods provided in this blog post, you can quickly and easily clear up space on your device and improve its performance. Remember to backup your data before deleting everything and follow the instructions carefully to avoid any issues.