Same steps as iPad. The Share button sits at the bottom of Safari.
Look for the install icon (⊕ or a small monitor) at the right of the address bar, or open the browser menu and choose Install Ascend….
apple-touch-icon.png at 180×180 (used for Home Screen icon on all iPhones and iPads).apple-mobile-web-app-capable + status-bar-style meta tags so the installed app launches fullscreen with a dark status bar.#0B0B0D matching the app's dark background — no flash on launch.Note: iOS no longer requires custom apple-touch-startup-image splash PNGs — recent Safari generates the splash from the manifest's background_color and icon automatically.