Due to no vodafone 3g network coverage in my town, I had to look for other operators. Then I purchased an airtel 3g sim as their 3g network was pretty good in our town. After a few days of it's use, I knew that this is the network which I wanted for a long time. There was no problem of call drop. Neither there was any problem of network coverage. The 3g internet speed is awesome. Also the customer service is quite helpful. One thing which I dislike about this network is the cost of 3g data packs. I mean they need to have a look at their data cost since reliance is providing it at much lower rate. I suggest this network for all those who want to experience great downloading speed but if you want a cost effective 3g network, then you should opt for reliance jio.