In every and daily life we all are us different types of phone and different types of smart phones.But which is the important thing of the phone is sim.This is all called brain of the phone.These simcard also available in different types, such as airtel, vodaphone, airce, jio etc.But Bsnl is one of them.We know that the fastest network is airtel but not available in every where.The transport area of the bsnl is highest than the other networks.It is also available in 2g, 3gnad 4g.So it is every where.I am also a bsnl CellOne user min 10 years.And I know that how to use it.The offers of the bsnp is very nice.In every case like recharge, data pack, message pack etc are less price and high comfort.This company try that how to pepole advance and get good technology.So I also suggest that use the bsnl and enjoy it.Thanks.