Reliance Jio has recorded highest average speed in 4G in the month of March, the telecom regulator said here.According to the data published by myspeed.trai.gov.in, Jio's average speed stood at 18.487 Mbps till April 1, 00.30 a.m.The speed recorded is the highest among other players like Bharti Airtel, Idea Cellular and Vodafone India.Jio also recorded highest speed in all technologies (2G, 3G and 4G), the Telecom Regulatory Authority of India's site stated.The other players present in all technologies are Aircel, Bharti Airtel, BSNL, Idea Cellular, Tata Docomo and Vodafone India.