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Clancy, an AppleInsider reader who brought the matter to our attention, believes the undocumented feature arrived as part of the most recent iPhone Software 2.1 update. He notes that the capability is only present in Web applications specifically authored to include the full-screen code.
To illustrate the feature, he's created a demo application for iPhone users to try out. In order to trigger the full-screen mode, follow these steps:
- Load the demo app in Safari on your iPhone
- Hit the "+" button at the base of the Safari app
- Select "Add to Home Screen"
- Save the App to the Home Screen
- Tap the icon that was just saved to your Home Screen
- The demo App should load in full screen without the Safari wrapper.
Once the app is loaded in full-screen, it behaves just like a native app acquired from the App Store, though it may perform slightly slower as all the resources and interface elements are being downloaded in real-time over the Internet.
You can even pull the interface down (screenshot, below) like a native app without the Safari interface coming into play.
Saving a Web app to the Home Screen
Steps to prep a Web app to launch as a full-screen app.
Launching a Web app in full-screen mode