The process typically begins at the official TuTuBox website using the Safari browser. Because Apple does not authorize these installations, the "Install" button triggers a prompt asking for permission to download a configuration profile. This profile is the digital key that allows the third-party store to exist on the device.
: Always use the native Safari browser for the initial download. Install TuTuBox - Up to iOS 15.6
: You must manually trust the developer in Settings > General > VPN & Device Management. The process typically begins at the official TuTuBox
Your (to check for current certificate compatibility). Any error messages appearing during the "Trust" process. Install TuTuBox - Up to iOS 15.6
I can provide a troubleshooting checklist if the install fails.