The 980 will be excellent with DS, Dreamcast and Saturn emulation (though Saturn emulation still needs some work). Drastic, Redream and Yaba Sanshiro for those systems. For Gamecube and Wii, the 980 is decent. Stick the custom MMJR builds and MMJ build of citra (3DS). Forget about PS2 emulation for now. The Play! core in Retroarch doesn't need a bios but compatibility is very low as it's a work in progress. In all likelihood whatever you want to play won't be supported. If you want to use PCSX2 you'll be needing a bios. Where that bios comes from I leave to you. For what it's worth I didn't dump my own bios. It's a ballache so most people don't. Also, make sure the roms are unzipped. Depending on your phone, the game image file needs to be in the internal storage of your phone (I would have a PS2 folder on internal storage) and can not be compressed as a .zip, .rar, .7zip, etc. Has to be an actual game image files like .bin/.cue, .img, etc. AetherSX2 is a PS2 emulator that runs on Android devices, and is set to release relatively soon. It comes from a new developer named Tahlreth, and while very little is known about the history of how AetherSX2 came to be, certain YouTubers have been given a alpha build of the emulator to show off the performance of PlayStation 2 games.
But it’s completely worth it and almost every supported iPhone is completely capable. As of august 21st, 2022. You’re argument for iPhone being less able to emulate than android has become null and void. Not here to trash ya just updating you on what about 5-6 months can do for compatibility. 1.