Micromax canvas win w121. I bought this phone from home shop 18 and had very bad experience with this phone. My motive is to buy a Windows phone which is affordable, because Lumia isnt in my budget. But this mobile is simply the waste of money which I realizes when I went to its app store and couldnt find uch apps.My brother have lumia so I went to him asnd ask him to show lumias app store. I felt cheated because most the good apps which are in lumia store are not present in my phones app store.It is biggest concern which should be fixed by micromax.