If you are planning to get a sim then I would recommend not to go with BSNL services. Its really poor in UP.
And also the price of its internet plans does not have a much considerable difference from airtel or idea.
The Internet is very slow at times and also you will die for that H+ sign on your handset because the network isnt available 24 hours for you.You know its like sarkaari kaam.Haha.