I bought a new Samsung Star GT-S5233S and its a great phone to use. It has 88mb of phone memory space, It is expandle to 8gb but i am using 2gb of micro sd memory card. I wanted to play big video files on this phone but cannot because it supports 3gp video format files and 3gp takes files take too much of memory on my memory card. So i have a problem with the 3gp format because with this file i cannot play big videos like movies on my phone. I wanted to know that is there any file format smaller than 3gp so that it doesn't take too much of memory of my phone.