I wouldn't say "most phones", but perhaps most of them in China: https://www.technologyreview.com/2024/04/24/1091740/chinese-keyboard-app-security-encryption/

I wouldn't say "most phones", but perhaps most of them in China: https://www.technologyreview.com/2024/04/24/1091740/chinese-keyboard-app-security-encryption/ https://www.technologyreview.com/2024/04/24/1091740/chinese-...