The third model in the Mi Max line (following the Mi Max and Mi Max 2), the Mi Max 3 is immediately distinguished from those before it by its new screen. Previously at 6.44in in the second-gen model, Xiaomi has increased the size to 6.9in - larger than ever before. In this tutorial, we will guide you to install the latest Lineage OS 19.1 on the Xiaomi Mi Max 3 (nitrogen) smartphone. We have given the complete instructions, downloads, and useful updates in the future. As we all know, Lineage OS 19.1 is based on Android 12 which is the 12th major release by Google and brings many new features and improvements. GuSS.