This mod is a port of the SkyGfx mod, which was originally created for the PC version of the game.
Mod functions (there are options in .ini after opening the game):
PS2 color filter.
Reflections of cars PS2.
Transparency with alpha correction (double pass).
Disabled specification of peds (human bodies no longer glow).
Reactivated procedural objects (procobj.dat).
Fixed greenish textures.
Re-enabled fog on the water and the screen, including when moving around the map.
High clouds with volume.
Removed graininess on the screen.
Grams (in progress).
Exponential haze (in progress).
To install, you need APK from RusJJ with ModLoader, you can download it here
Installing: Unzip the archive and move the configs, mods folders along the path: Android/Data/com.rockstargames.gtasa. And that's it, enjoy the game! The author of the plugin is The Hero