When people search for an "iOS 9 signed zip for Android," they are usually looking for one of three things:

Therefore, even if a working solution existed (it doesn’t), it would be of questionable legality.

Regarding iOS 9 specifically:

Most files marketed this way are typically one of three things:

The search query "Download iOS 9 signed ZIP for Android" suggests that users may be:

If you'd like to explore specific apps to achieve this look: (Nova Launcher, Launcher iOS 16) Control Centers (Control Center iOS 15 style) Lock Screens (iOS Lock Screen apps)

Here is their trick: