http://ssd.iykpqm7jiradoeezzkhj7c4b33g4hbgfwelht2evxxeicbpjy44c7ead.onion/ps/module/how-encrypt-your-iphone
Even with Standard Data Encryption, some data is end-to-end encrypted, including potentially private information like Journal data, Health data, Wallet passes, and any passwords you store in the built-in password manager . However, Standard Data Encryption does not encrypt an iCloud Backup of your device or the backup of conversations in Messages end-to-end.