Bootable but highly sluggish on the limited hardware.
is a nostalgic "entry-level" masterpiece known for its 4-inch super-sensitive display and durable build. Today, the primary appeal of custom ROMs for this device is the ability to bypass the defunct Windows Store and breathe new life into its 512MB of RAM. Key Custom ROM Possibilities FULL Android RUNNING on Windows Phone / Nokia Lumia! Nokia Lumia 520 Custom Rom
In the twilight of the Windows era, some developers attempted to port the Android subsystem to Windows Phone. This is highly experimental and unstable on a Lumia 520. It allows running Android APKs natively, but the performance on the 520's 512MB RAM is abysmal. This is recommended only for those who want to experiment, not for a daily driver. Bootable but highly sluggish on the limited hardware