FPse for Android is the fastest and most compatible PSone emulator for handheld devices.(also known as PSX or Playstation 1)
More than 200.000 active users and rated up to 4,5 stars on google play!
FPse is able to render PSone games in high resolution by using OpenGL which gives outstanding graphics!
Size: 1.6 MB
Required android: 2.1 and up
Source Link: https://play.google.com/com.emulator.fpse
ZIPPY LINK: Download HERE