The latest apk update this time with the category Action titled PPSSPP Gold – PSP emulator 1.6.3, you can download on the link below, may be useful for you.
Play PSP games on your Android device, at high definition with extra features!
PPSSPP is the best, original and only PSP* emulator for Android. It runs a lot of games, but depending on the power of your device all may not run at full speed.
Buy this Gold version to support development. There is also a free version.
Galaxy S7 is supported again and works!
No games are included with this download. Dump your own real PSP games and turn them into .ISO or .CSO files, or simply play free homebrew games, which are available online. Put those in /PSP/GAME on your SD card / USB storage.