Data speed on Bharti Airtel network was the fastest and Reliance Jio network coverage was highest during the July-December 2018 period in 15-cities across the country, according to report released by telecom network research firm Ookla. "Airtel was the fastest mobile operator in India during third and fourth quarters of 2018, regardless of whether a customer was on LTE or not," the report said.

Reliance Jio continues to top the 4G download speed by achieving a rate of 18.7 megabit per second (mbps) in December, although the speed was down compared to November when it had recorded a rate of 20.3 mbps. As per data shared by Telecom Regulatory Authority of India (Trai), Jio has been leading the 4G download speed for the past 12 months.

Reliance Jio has been spotted testing its VoWi-Fi (voice-over-Wi-Fi) service in India. With the new service, the Mumbai-based telco will be able to allow its subscribers to make voice calls and access the Internet all without having active cellular connectivity. The Jio VoWi-Fi service is said to be in testing in a handful of Indian regions, including Andhra Pradesh, Kerala, Madhya Pradesh, and Telangana.