I am like bsnl .I used bsnl networks 6 years ago.bsnl is a good service providers .and networks available anywhere in Indian .
Good networks quality.and net speed is very good 2g speed other than operater is faster.3G networks available my circles .and 3g speed is good.customers care service is very good.and call rate is costly.other than operater.bsnl is a government company .trust.bsnl is oldest operators other than operators.