I like Vodafone. It gives good 3G and 4G connectivity. It gives speed at maxim 100mbps. In rural area it gives around 44mbps speed in LTE network. Vodafone don’t launch VOLTE till now. It’s plan rate is cheap and feel comfort when use 4G. You get unlimited 4G data at 447( price may vary) . 3G data rate is very cheap & 2g speed is great, 2g gives around 199 kbps to 550kbps speed.