Article in English: The only way to set a different default browser in iOS is to jailbreak the device. Jailbreaking is typically not possible if you are running the latest version of iOS. For instructions on jailbreaking various iOS devices, see Jailbreak an iPhone. Cydia is the package manager for your jailbroken iOS device, and allows you to install a variety of tweaks and apps specifically for jailbroken devices. You'll find Cydia on one of your Home screens after jailbreaking. This is a tweak to the iOS device's system settings that allows you to change the default browser. It is available through Cydia's default repositories. Your iOS device will reboot to complete the installation process. "Open in Chrome" will add a new option to your Settings app. Check that the slider is toggled on in the "Open in Chrome" section of the Settings app. This will set Chrome as the default browser. With "Open in Chrome" enabled, any link you tap will automatically open in Chrome. This will apply to links in email messages, texts, app, websites, and any other links.

Summary in Vietnamese:
Bẻ khóa (jailbreak) thiết bị iOS. Mở Cydia trên thiết bị iOS đã được bẻ khóa. Chạm vào lựa chọn Search (Tìm kiếm) và tìm "Open in Chrome" (Mở trong Chrome). Chọn nút "Install" (Cài đặt) để tải và cài đặt chỉnh sửa hệ thống. Mở ứng dụng Settings (Cài đặt) trên thiết bị. Đảm bảo "Open in Chrome" đã được bật. Chạm vào một đường dẫn để mở Chrome theo mặc định.