Hi Friends usually i donot write reviews .. But i wanted to write one after using this product for a month or more..As its very badly badly given 3 Star I think this product deserves more ...The reviews are pretty outdated .and most of the issues mentioned prior were solved .I would rate this product very high. I had recently purchased a 4k tv and was not happy with my Dish HD settop box so wanted to change and was looking for a good set top box . TATA & Videocon also provide 4k settop box but they are very high priced.But this one is more affordable as you pay appr 6 900 rs and get an year free full channels .Pros :4k set top box.Supports DD .Good hardware .Supports casting (not 4k )[youtube,hotstar]runs on Android TV OS 6 stable enough .Limited apps please dont compare with your mobile as platforms are different .has netflix ,Amazon Prime .Sounds better with my Yamaha AV reciever.OS is runs good enough with Hardware.Cons:UI is a bit different and good a step towards future .But may take some time to get used to .Loading of programs listing depends on your internet speed.I found the HD clarity of tata is a bit better than airtel sooo People who have high end 4k tv like samsung LG costing a lakh and more dont go for it as u dont need this better go for tata sky 4k settop box .feel free to ask any questing i shall be glad to answer