To play games, import your Game Boy Advance ROM files into the app, which are the game data files needed for emulation.

John GBA is an emulator app designed for playing Game Boy Advance games on mobile devices. It allows users to enjoy classic games with various customization options.

To continue your game, load previously saved states from the save menu, enabling you to pick up right where you left off.

Launch the John GBA app to enter its main interface, where you can manage your games and settings easily.

Utilize the save state feature to save your current game progress at any point, allowing you to resume later without losing your place.

Once you've located your desired ROM, simply tap on it to begin playing the game immediately.

The app features a file browser that helps you navigate your device's storage to find and select your ROM files for loading.