I encountered the same problem on a Samsung Galaxy Note II. Are you running your game and your bios on a external micro SD card? Try to run your game on the phone's internal memory. If it works, then that means that the problem is with your Micro SD card. Try to format it with Windows (Not with Android) and transfer your PS1 Rom and your bios back into the card. It worked for me, my SD card was corrupted... If it doesn't work, try to buy another external SD card! Hope it helps!