This is about the architecture of iCloud not iOS. Apple has the keys to all encrypted iCloud data (iCloud email is not encrypted at rest). The only exception i

This is about the architecture of iCloud not iOS. Apple has the keys to all encrypted iCloud data (iCloud email is not encrypted at rest). The only exception is iCloud keychain, but I believe only if you decline the default setting to create an iCloud security code (I'm not entirely sure about that) https://support.apple.com/en-us/HT202303 https://support.apple.com/en-us/HT202303