Their 4g penetration is not worth, even in my house if i go to east side balcony i get good network while if i go to my west side balcony it struggles to get signal and even if signal is full the internet is down, had to make flight mode and then normal mode to work, don't worry i don't have big mansion like ambani just a flat. Airtel guy visisted and left with stone statements - we are upgrading our networks and this would be resolved soon.