Need help before installing PPSSPP

[LunaMoo]

Ugh, I called mobiles potatoes to encourage you, but since you now ask about mobile that turned wrong;p.

Not without reason through ~ most mobiles have really bad drivers which makes them even slower than they could be and all mobile gpu's have some serious faults and bottlenecks which cause glitches and ruin performance except maybe newer Nvidia chips like K1/X1, but those are too big for smartphones and are only in very few bigger android devices.
It's really hard to say as each android device is different and their specs itself doesn't say much without testing, so just try, at least some less demanding games should work decently, eventually with some speedhacks or frameskipping.

Also maybe sometime next year PPSSPP will support new API called Vulkan which as most people hope will improve performance on many android devices and hopefully also open a road for new fixes and general improvements, not sure if older smartphones like S3 will support it, but it's certainly something worth waiting for.