Aditya birla group is the main company of idea. The call rate after porting your old sim of any other oprator to idea is normal. Also you get the best plan on new sim but if your sim is old more than six months then boss the call rate is increase so high you can not imagine the rate of that company. But the internet speed is so good in copaire to the other oprator. You also enjoy 3 G as well as 4G. The speed is so good. But custmor survice of idea is not so good. I recomanded use idea only six months only.
