Before jio Tata Docomo is a good company. Now this is a good company but jio has conduct the market value. Docomo is not give 4g internet speed that is a big reason docomo value is conduct. Docomo calling rates are very good like airtel idea and etc. But not a jio. Docomo was gave good services before jio. Now docomo gave good services but lot of people using jio. People are like docomo.i am using the docomo after the jio I will using .