I own a tech review site and several people have complained about the wi fi not working properly . The company had announced the major cause - duralumin case ,which i really suspect as a marketing strategy . I heard a new 9 series is available in UK and USA without the duralumin case. This one looks like a one with that. So you might want to enquire with flipkart
To the other commentator, no the one available in US and UK doesn't come without duralumin case. Samsung has added an additional antenna for wifi to resolve the issue in later models (the current wifi has 3 antennas). The latest one is 900X3A-"A04IN". Make sure you keep that in mind, the A04IN postfix. I have this laptop, couldn't have asked for anything better.