Just downloaded it, works perfectly. Tested with dissidia and persona 3 portable and they worked glitch free at 30fps all through. www.ppsspp.org. Access from your phone or your computer for instructions. I tested it with a samsung galaxy note 2 (N7100). On a gpu scale, this would be slightly higher than an s3 but lower than an s4 so if it doesn't work as well for you, maybe consider upgrading. Of course there's still the button/touchscreen controls problem but if you can get past that, then definitely give this emulator a try. I don't think your phone needs to be rooted to install it but some feedback would be nice. Its also available for windows pcs and jailbroken iphones according to the homepage. I have now succeeded in emulating the psp on a laptop, a vita and a samsung android phone. I'm so proud of me.