Airtel is gives very bad service and there is nothing like open network because at my home there is no airtel 3G, 4G I called customer care about 2 month every day I talk with their senior , Zonal officer , Nodal officer but they all said I am watching here in my system and there is no issue of network in your area. They dont even care what my problem is or they dont even arrange a site visit to check what the exectly issue is. I took my card out from my phone and throw it.