@ Deanimator: thanks mate. yup. i checked those sites. But the reviews there were showing that the apps were fake. can you suggest any other site?
@Mr. Belvedere: On my phone box, it is written Native SNS. Does that mean something about the operating system?
As for the info from the sites, I am equally confused. They are telling that it runs on Android/BADA/proprietary OS and god knows what more.