Far too advanced, it’s much easier actually… ?
All you need to do is open the config window once the game has launched by pressing the “Back” softkey on your phone, then tap “Adjust screen”, and chose “Fullscreen” instead of the default “Fit screen”.
This will stretch the image across the whole screen. Even absolute mouse if working fine. 🙂
Remember to tap the “Back” key again, and save the setting by tapping the disk symbol in the lower left corner of the config menu. This way, it’s stored permanently, and you don’t have to repeat the above step every time you launch the game.