If you already have GTA installed, go to Android/data/ and rename the com.rockstargames.gtasa folder (e.g., add a "1" at the end) so it isn't deleted when you uninstall the old game.
In ALG (Android Library for GTA) Lite menus, the interface is usually controlled via on-screen buttons (like "Activate Menu" or "Cheat Code") and in-game controls. Here is how to utilize the Vehicle and Tuning features typically found in v2.00: gta sa alg v2.00 lite cleo