I first using tata docomo becuse of its lprovide lots of offers and cheap prices of data and call rates also but one bad thing of docomo is coverage I basicly belongs to karnataka in small villgae in this village there is no dococme coveges so later I do mnp mobile number portablity to becuase idea is providing almost every village of its coverage and also provinding 4g with high speed in our locality but speed may difer based on your locality so I will not say anything related to speed because speed in depented upon your area ur when u r nearing to coverge u may got full speed so in idea they now provinding good offers also I last night I rechared with 398 rs they provind 70 gb day n unlimited call ya in call is limited to 1200 min in week ita not bad in point of view ya also one think I missd on starting when I ported to they me a free 6 moths of base plan under the call rates is half paisa minute also gifted 5 gb 4g fre to 15 days ya ita networ I suggest u first look who is providing good speed then decide u shuould ho for if of not thats all