Many users mistakenly try to double-tap the screen itself, which does not trigger the installation. How to Enable or Fix the Prompt
The "download app double click to install" prompt is a security and confirmation feature primarily found on Apple devices like the iPhone and iPad. While it may initially seem confusing, it is designed to prevent accidental purchases and unauthorized downloads. What "Double Click to Install" Means download app double click to install
This action triggers Face ID or Touch ID to verify your identity before the download begins. Many users mistakenly try to double-tap the screen