Before 2007, the world's most advanced phones sacrificed half their face to permanent plastic keyboards. The first iPhone rendered them instantly obsolete with a single slab of glass.
To understand the shift, you have to look at what represented the peak of mobile technology right before Apple's announcement. Devices like the Palm Treo and BlackBerry were miniature computers forced into a pocketable format. Because the physical keys took up so much space, users were left with a tiny screen for visual output. Navigation required tapping on the display with a plastic stylus or rolling a mechanical trackball. Web browsing was largely limited to the "mobile web" (WAP)—a stripped-down, simplified version of the internet that barely resembled a desktop experience.
When Apple introduced the first-generation iPhone in January 2007, it discarded these industry standards entirely.
The most radical hardware change was the 3.5-inch glass screen. By abandoning the permanent physical keyboard, Apple created a device whose interface could adapt to whatever application was currently open. The display was entirely multi-touch, meaning it responded to bare fingers rather than a plastic stylus. Gestures that are now second nature—like pinching a map to zoom in or flicking a list to scroll—were introduced to consumers for the first time, functioning with a fluidity that no competitor had achieved.
Software was the other half of the shift. Instead of the fractured, text-based mobile web, the iPhone ran a desktop-class browser, Safari. Users could view full webpages exactly as they appeared on a computer monitor, zooming in to read text. Apple also integrated the functionality of its iPod directly into the phone, eliminating the need for consumers to carry a separate MP3 player.
The original iPhone lacked 3G connectivity and could not install third-party apps until the App Store launched a year later. But its core premise—a touch-driven slab of glass running a full operating system—instantly rendered the stylus-and-keyboard era obsolete, dictating the physical shape of every mobile device that followed.
