Article in English: This is the gray app with gears on it that you'll likely find on the Home Screen. You'll see this tab on the left side of the page. It's at the top of the "General" page. The number to the right of the "Version" tag on this page is your iPad's software version (e.g., 10.3.1). The software version determines the appearance and function of your iPad's programs and features.

Summary in Vietnamese:
Mở phần cài đặt trong iPad. Nhấn vào thẻ General (Cài đặt chung) nằm bên trái trang. Nhấn vào phần About (Giới thiệu) nằm đầu trang "General". Xem số "Version" (Phiên bản).