Article in English: Use the iPhone's charging cable to connect it to one of your computer's USB ports. If you're on a Mac that doesn't have a USB port, you will need to purchase a USB-C to USB-3.0 adapter. If iTunes doesn't open automatically, double-click the iTunes program icon to open it. iTunes resembles a multicolored musical note on a white background. This iPhone-shaped icon is at the top of the iTunes window. Doing so opens the iPhone's page. This tab is in the left-hand sidebar below the "Settings" heading. It's at the top of the Sync Photos page. Doing so will allow you to add photos from your computer to your iPhone. You'll find this option near the top of the Sync Photos page. Clicking it prompts a drop-down menu. It's at the top of the drop-down menu. Click the folder from which you want to upload photos, then click Select Folder. If the picture folder you selected has one or more folders in it that you don't want photos from, check the "Selected folders" radio button and then check each folder you want to use to upload photos. Check the "Include videos" box in the middle of the page to upload videos in your selected folder, or leave the box unchecked to upload only pictures. Your selected photos will begin uploading to your iPhone. Once the photos finish uploading, they will appear on your iPhone.

Summary in Vietnamese:
Kết nối iPhone với máy tính bằng cáp sạc của điện thoại thông qua cổng USB trên máy tính. Mở iTunes. Nhấp vào biểu tượng iPhone. Nhấp vào Photos (Hình ảnh). Tích vào ô "Sync Photos" (Đồng bộ hóa ảnh). Nhấp vào khung thả xuống "Copy photos from:" (Sao chép ảnh từ). Nhấp vào Choose folder… (Chọn thư mục). Chọn thư mục. Chọn thư mục con nếu cần thiết. Xác định xem bạn có muốn bao gồm video hay không. Nhấp vào Apply (Áp dụng).