I am using jio sim since last 6 months when I bought this sim I thought that this sim will give a better speed of Internet on mobile phone but I am disappointed with the network service it is a 4G sim but it gives speed of 3G network. There is lot of fluctuation in the network signal. Reliance jio is cheating customers. Customer service of Reliance jio is not good. If I am paying for a 4G network internet speed so why am I getting 3G network speed. I am totally disappointed by Reliance jio. Worst network service.