Read this support article about how to downgrade or cancel your iCloud+ storage plan on an Apple mobile device, a Mac, or a PC. --> Downgrade or cancel your iCloud+ plan - Apple Support
- "If you don't have one of these devices, contact Apple Support to change your iCloud storage plan." To contact support, click here --> Choose your country or region - Official Apple Support Select your country, then a product.
If you downgrade, make sure you read the section "What happens when you downgrade or cancel iCloud+" in this support article Downgrade or cancel your iCloud+ plan - Apple Support
What happens when you decrease your storage plan
● If you downgrade or cancel your iCloud+ plan, the change takes effect after your current subscription billing period ends.
● If your iCloud storage exceeds your new storage plan capacity, iCloud won't sync or update your information, and iCloud backups won't complete. iCloud starts syncing again and iCloud backups resume when you increase your storage capacity or delete information to make more space.
● If you downgrade to the free iCloud plan, you will no longer have access to iCloud+ features like Hide My Email, Private Relay, and HomeKit Secure Video support.
● If you pay for both Apple One and an iCloud+ plan, you can downgrade or cancel the iCloud+ plan and just use the iCloud+ plan included in Apple One. After you select Change Storage Plan, there might be additional steps before you can downgrade or cancel your storage.
● If you leave a family that shares an iCloud+ plan and you're using more than 5GB of storage, you can buy your own plan [ Buy iCloud+ or upgrade your current storage plan - Apple Support ] to continue using iCloud storage.
● If you choose not to buy your own plan and the content that you’re storing in iCloud exceeds your available storage, new photos and videos won’t upload to iCloud Photos, files will no longer upload in iCloud Drive, and your iOS and iPadOS devices will stop backing up.
- From:
Downgrade or cancel your iCloud+ plan - Apple Support
Share iCloud+ with your Family Sharing group - Apple Support
While you might consider keeping your subscription for "backup" purposes, there are advantages (namely a convenient and remote backup), and disadvantages to doing this. While iCloud is touted as a backup feature, I would not rely upon it as my sole backup. It is really a syncing service. Apple does not guarantee it as a backup service, and should, for example, you ever have problems with your account being locked, you might suddenly discover that all your backups are now locked too.
