No doubt that tata docomo call rates in prepaid is less compared to other operators in india and regarding pospaid docomo has cheapest plan then other but there is range problem in sum places tata docomo has many plans I use 199 plan but I get range problem at my work place aby many more but its good to havr cheap plan it also has less charges but again problem for range thats all.data connection is a he’ll lot of problem with docomo connection and speed is very poor.