Yeah, on smartphones save files are private and need rooting the phone to back up. Emulation really is only a good idea with PC. Not only can you access your save file freely you also can connect game pads which way better reproduce console controls than a fiddly touch screen.
Or you use emulators. There save files will also never vanish nor break. My GB save is still intact.
Hi FlyingSparks2004, How are you? Working hard as always ^.=.^