for the best compatibility with on-screen touch controls or external Bluetooth gamepads.
While emulators themselves are legal (see Sony v. Bleem ), distributing them often requires using proprietary SDKs (Software Development Kits). Unofficial Android ports often violate the GPL or other open-source licenses. Furthermore, Mediafire links often bundle the emulator with a "tutorial" linking to ROM sites, which is the real legal danger. cemu android apk mediafire
to upscale resolution or disable demanding shadows on lower-end hardware. Dual Screen : If you have a dual-screen device (like the Retroid Pocket DS for the best compatibility with on-screen touch controls