If your hardware is actually 64-bit capable but the manufacturer abandoned it on Android 4.4.2, look into custom ROMs. Platforms like LineageOS might allow you to upgrade your device to Android 8.0 or higher, unlocking official 3DS emulator support.
: Most 3DS emulators are compiled strictly for 64-bit source code (arm64-v8a) . Android 4.4.2 devices are almost exclusively 32-bit (armeabi-v7a) , making them fundamentally incompatible with modern emulator builds. Potential Workarounds and Software Options 3ds emulator for android 4.4.2
Emulators such as (for PS1) and Mupen64Plus FZ (for N64) have legacy versions that support Android 4.4.2. They provide excellent 3D gaming experiences that fit within the hardware limitations of older chipsets. If your hardware is actually 64-bit capable but
Achieving playable due to hard limitations in architecture (32-bit vs. 64-bit) and graphics API support (OpenGL ES 3.0 vs. 3.2). To experience Nintendo 3DS emulation, an upgrade to a device running Android 8.0 or newer with a 64-bit processor is required. For an Android 4.4.2 device, repurposing it into a dedicated Nintendo DS, GBA, or PS1 retro gaming console is the best path forward. Android 4
Citra is the definitive Nintendo 3DS emulator. While official Citra requires Android 8.0 and a 64-bit CPU, independent developers on forums like GitHub and XDA Developers have previously compiled unofficial 32-bit forks.
Go to settings and ensure your battery saver is off and performance mode is active.
The official Citra Android build requires a 64-bit device running Android 8.0 or newer. It will fail to install (Parsing Error) on a KitKat device. RetroArch (Citra Core)