I was a vodafone user. I ported from vodafone to another operator in order to have 3g services thinking that vodafone 3g network is weak .
But I was wrong . the other operators didt had wide network service. I am a slow learner . I came to see that others charge large value of money for network access. now I am going to port my number vodafone again. I expect that vodafone is same as before. I hope that they soon start 4G network all over.