It is Best of all voice network for calling you will get full signal even in Basement of Building in idea sim I recommned this network for all over mp all operators are better in data segment but in voice no one beat idea in mpcg circle. Idea has now volte in all his 4g circles. And 4g icr with vodafone in circle like delhi. You can hatch on any vodafone or idea network in roaming for example I have visited rajasthan last month I have used idea 4g on vodafone 4g network while in roaming and vice versa too.