Technical issues

Dear Developments! I have some questions about Minecraft PE. I have a Samsung Galaxy Ace 4, 1GB RAM etc. I've been playing the game long ago and now it's been a problem, it's been a long time since the game went on 1GB of RAM now and it quits without any bumps. How Much RAM Does the Game Have About? Can I fix it on 1GB of RAM without leaving it?

Thanks : Paha Ákos