Recently there was a huge mess, about a service provider named as JIO. It was shoking to hear that a service provider is providing 4G services for free. Everbody was was shocked and so was i.I bought this jio 4G sim in the month of sep. but after some weeks I started facing signal problems.I live in uttam nagar so, every one living around was facing the same problem. At present I am running a speed of 140 - 155 kbps speed, which is maximum. Now we talk about jio 4G calling. Its not impressive as when ever you will connect, it will say either busy or not reachable. The signal strength is too low.