Turning off iCloud Backup stops future automatic device backups to iCloud; it does not by itself remove the data already stored in an existing iCloud backup. Make sure you have another recovery plan before disabling it.
Steps
Step 1: Open iCloud settings
Open Settings, tap your name, then tap iCloud.
Step 2: Open iCloud Backup
Tap iCloud Backup.
Step 3: Turn off backup for this iPhone
Turn off Back Up This iPhone and confirm if prompted.
Step 4: Verify your alternative backup
If you plan to use a Mac or PC instead, connect the iPhone and create a current encrypted local backup through Finder on a Mac or Apple Devices on a supported Windows PC.
Important Details
Disabling iCloud Backup is different from deleting an existing backup to reclaim iCloud storage. Do not remove your only usable backup until another verified copy exists.
What Turning Off iCloud Backup Changes
The switch controls automatic iCloud device backups. Other iCloud features such as Photos, Contacts, Notes, iCloud Drive, and Messages can have their own synchronization settings and are not automatically turned off with iCloud Backup.
Keep a Recoverable Copy
If you replace iCloud Backup with a computer backup, an encrypted local backup is especially useful because it can preserve additional categories of sensitive data that an unencrypted computer backup does not. Store the backup on a computer that is itself protected and backed up.
Matt Jacobs has been working as an IT consultant for small businesses since receiving his Master’s degree in 2003. While he still does some consulting work, his primary focus now is on creating technology support content for SupportYourTech.com.
His work can be found on many websites and focuses on topics such as Microsoft Office, Apple devices, Android devices, Photoshop, and more.