FIFA 16 for Android is officially discontinued, and its official online servers were shut down on . Because of this, users typically encounter "Server Error Unavailable" when attempting to play. Modern fixes generally involve using offline mods or specific file management techniques to bypass the server check.
If your phone has a 1440p screen, try downscaling to 1080p in system settings to maintain a steady 60 FPS. Troubleshooting Common ZIP Failures fix server fifa 16 zip file download android high quality
This is where most users fail. Do not just leave the files in the download folder. FIFA 16 for Android is officially discontinued, and