I meant that because iMessage fallback to SMS and you don't know if sending an iMessage to someone will go through iMessage or SMS which might cost you money, t

I meant that because iMessage fallback to SMS and you don't know if sending an iMessage to someone will go through iMessage or SMS which might cost you money, that's why nobody uses iMessage. iMessage isn't iCloud, but iMessages are stored in iCloud, Apple also stores iCloud encryption keys in China. See https://techcrunch.com/2018/02/25/apple-moves-icloud-encryption-keys-for-chinese-users-to-china/ https://techcrunch.com/2018/02/25/apple-moves-icloud-encrypt...