(Note: If the file is labeled "APK," it is likely an installer wrapper that will place the game data directly into your Android/OBB folder. Run the APK to install, but usually, for PPSSPP games, you want the raw ISO/CSO file.)

Never grant the APK mod access to your contacts, SMS, or camera. Modded APKs from ROM sites can sometimes contain trackers. Scan every file with VirusTotal before installing. Consider using a dedicated "gaming profile" on your phone (like Secure Folder on Samsung) to isolate the mod.

Once installed, the game can typically be played without an active internet connection. How to Install from isoroms.com