Web app turns your old phone into a new smart display
A German software engineer named Tuan Anh Bui has built ScreenWall, a free web platform that turns old phones, tablets or even ancient monitors into wall-mounted smart displays without requiring any app installation. The tool aims to give discarded devices a second life as clocks, weather stations, status boards or photo frames, appealing to anyone with unused hardware sitting in a drawer rather than heading to landfill.
Currently in beta, ScreenWall lets users pair a device by scanning a QR code or entering a six-digit code, then drag it onto a chosen widget within a "wall" workspace; it comes with demo widgets such as a clock and weather display, and supports custom JavaScript widgets and JSON data sources. It uses the Screen Wake Lock API to stop screens sleeping, but testing by The Register found reconnection quirks: closing the browser tab or letting a device sleep disconnects it, often requiring a fresh QR scan that can scramble the layout of the display wall, so users are advised to keep the tab open for smoother long-term use.
In short
- ScreenWall turns old phones/tablets into web-based smart displays free
- No app install needed; pairs via QR code or six-digit code
- Currently in beta; reconnection after sleep or tab closure can be glitchy
Explained simply
Every household tends to accumulate electronic devices that no longer see regular use. Rather than letting old phones, tablets or monitors gather dust or end up in landfill, ScreenWall offers a way to repurpose them as wall-mounted smart displays without requiring additional app installations.
The free web-based tool, created by German software engineer Tuan Anh Bui, works by pairing a device through a QR code or code entry, then allowing users to arrange widgets into a customised display wall. Available widgets include clocks and weather information, and the platform also supports custom-built widgets and data sources for more specialised needs.
The growing challenge of electronic waste has made device repurposing increasingly appealing to consumers. Projects like ScreenWall address both environmental concerns and the practical desire to extract additional value from equipment that might otherwise be discarded.
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