I took the reliance sim card long back year ago, though I am residing in Mumbai the network on my mobile comes good, but when it comes in other area like non metropolitan area the network is one of the worst I have seem till now. Whenever I go to my native place the network goes off, I dont get the network from other service provider also.
Not even my native place, last year when we went for vacation there also the network was zero, but my mobile was having other sim card vodafone, it was having full network range. I think reliance is lagging setting up the required towers which are required in all area.