https://blog.wongcw.com/2021/01/14/galaxy-s21-s21-ultra%e7%9c%9f%e6%a9%9f%e8%ab%9c%e7%85%a7%e6%9b%9d%e5%85%89%e7%a2%ba%e8%aa%8dultra%e4%b8%8d%e6%94%af%e6%8c%81microsd%e6%93%b4%e5%b1%95/
Galaxy S21/S21 Ultra真機諜照曝光確認Ultra不支持MicroSD擴展