Idea is a company which provide us SIM cards. Also we can say that this is a mobile operator company idea is a great sim card for cities is like Delhi, Chandigarh extra but I'm small villages or towns this sim card is not good for calling.
This sim card gives you bad experience of calling if you call someone then you have to go on your house terrace or any other place otherwise. the sound of other person is not hearable properly and sometimes Internet speed of this mobile operator will become quiet slow.