Reliance Jio has the best plans and is best in other other operator but the speed it offers is also a great but the signal strength is good signals off jio across many limited reasons but it is very nice.i go get a speed of 4 mbps of download and 2 mbps upload it s very nice mobile network.
Jio network is mostly covered the all areas .so I hope you understand it so go for a jio connection if you want but if it doesnt come in your area. Jio is a good service provider in India.