JIO digital India is the most popular isp in India, it was launch in 2016 September officially , that time they provide Free services to all there customer. I am a Jio user , internet service is good, Downloading speed upto 6mbps and upload is about 2 mbps. Calling is very good now.
JIO ISP now change for there services around 499 for 84 days, with free service.
Many other ISP are also change there service plan .
But at now Jio is the best for me and my family.