Ahh, wish I'd have seen this topic earlier.
Where have you got the game from? Do you have any mods installed? Tried removing the gta3.set file located in the GTA3 User Files folder?
I'm not sure how Android works, but here's something I found, might help might not.
|GTAIII crashes after a certain amount of time, with no obvious catalyst for the crash.|
Solution: You probably have overheating/RAM issues. Open Task Manager (CTRL+ALT+DEL or right-click the Task Bar -> Task Manager) and end all non-essential processes.
Advice: Defragment your hard drive, and check for things like spyware and viruses (Spybot, Ad-Aware and AVG Free recommended).
Hope anything helps!