Powerful display tuning for Android power users who want a seamless, high-resolution external monitor setup

SecondScreen is built for advanced users who regularly connect Android devices to TVs or monitors. Working alongside your existing screen mirroring method, it lets you fine-tune resolution, density, and desktop-style behavior for a smooth, desktop-like experience. Ideal for high-resolution screen mirroring setups and users who want to optimize their phone for desktop mode.

Enjoy streamlined profiles, automatic connectivity tools, and deep system customization—perfect for productivity, media, or multi-display workflows. Featured on Pocketables, XDA-Developers, Android Police, AndroidHeadlines, Android Community, and Android Beat. A great companion for anyone configuring a best Android external display app or a flexible portable workstation.

Please read before downloading:
• Requires root access or adb permissions.
• Designed for AOSP/Google experience ROMs only.
• Does not include screen mirroring—use Miracast, Chromecast, MHL, or SlimPort.
• A Bluetooth keyboard/mouse is strongly recommended.

Features

• Adjust resolution and DPI to match any external display for a true desktop-style interface.

• Profile-based interface for easy switching between different screens and environments.

• Extensive configuration options: auto-enable Wi-Fi/Bluetooth, immersive mode, overscan, landscape lock, Daydreams, and more.

• Automatic profile loading when a display is connected, plus Tasker integration and Quick Actions.

• Homescreen shortcuts for one-tap profile launches—ideal for fast workflow switching.