While the concept is beautiful, the technology is not there. The GTA Underground mod is a masterpiece of PC modding that requires 64-bit processing, high streaming memory, and a dedicated GPU. Your Android phone, despite its power, is running a 32-bit wrapper of a 2004 game engine.
Until the day Rockstar releases a native "GTA: Worlds" mobile app, the search for a stable download will remain the holy grail—a dream chased by many, achieved by few, and stable for none. gta underground mod android
However, there is a grey area. The modding community on platforms like GTAForums and Discord has successfully ported assets of the Underground mod to the Android version of San Andreas using a mod loader called and "Fastman92 Limit Adjuster for Android." While the concept is beautiful, the technology is not there