Hi everyone friend.I am useing tatadocomo networks past 5 years.i released that tatadocomo networks os good only city or town but out of city than networks is not good and network available Vodafone connect than tatadocomo tariff not work and call rate change normal rate .tariff work only on networks so that networks other than show rooming.on networks call and data plans is cheapest price.other service is good.i am not like tatadocomo .