He navigated back to the App Store on the iPhone 3G. He found the Facebook listing. The “GET” button was grayed out. But he noticed a tiny, almost invisible drop-down arrow next to the cloud icon.

The message whooshed away with a satisfying swoosh sound effect.

He tapped it.

Leo stared at the device. It was his “backup phone,” the one he kept in a drawer for emergencies. But tonight, an actual emergency had occurred: his modern iPhone had taken a bath in a puddle of sparkling water. He needed to tell Sarah he’d be late.

He smiled. The iPhone 3.1.2, the forgotten App Store loophole, and the ghost of a simpler Facebook had saved the day. He locked the phone and placed it gently on the table.

A progress bar appeared. The old, spinning gear of iOS 3.1.2 churned. It took four minutes. The little speaker grille got warm. Finally, the icon resolved itself: the old deep blue square, the white ‘f’, the subtle glossy shine that Steve Jobs once adored.

He tapped the icon. It looked like a cartoonish, low-polygon version of its modern self. The app opened, and the familiar blue “New” badge appeared. But when he searched for “Facebook,” the results were a graveyard of forgotten software. AOL Radio. iHandy Level. Tap Tap Revenge.

The results were like digital archeology. Forums from 2010. Blog posts written in a dialect of the past: “Jailbreak.” “Cydia.” “IPA files.”