Jio is a company under indias bigest co. Reliance co. Which has been providing this free type of service to people as they are providing free internet, free calls, free sms, free vedio calls for 3 months for no cost .earlier they were giving these service to only lyf and samsung phones but now the prewie offer is eligible for every lte that is 4g eligible smart phone .this service is giving upto 40 mbps speed which is tremendous as compare to other comanys .just go to anu reliance mini digital express and get a sim today.