Created by renowned XDA member KonstaT (KonstaKANG), there’s now an unofficial LineageOS 19.0 build for Raspberry Pi 4 Model B, Raspberry P 400, and Raspberry P Compute Module 4 (CM4) computers, based on the Android 12 mobile operating system and, to my surprise, it runs quite well.
The image is distributed in the same format as any other Raspberry Pi operating system, which means that after you’ve downloaded the image (see direct download link at the end of the article), you’ll be able to easily write it on a microSD card with the official Raspberry Pi Imager utility or a similar tool.