NEW DELHI: Mobile data consumers in India will be paying not more than Rs 50 per GB by 2020 against rS 228 they paid for a GB in 2016, Analysys Mason said in an ET Telecom webinar.In a scenario where price per GB declines to Rs 50, the 4G LTE data usage would go up to 6-7 GB per month and assuming 17% Wi-Fi offload as per current trends, 4G data usage on cellular networks would reach 5-6 GB per month, analysts from the research firm predicted. The 3G data usage is expected to reach 1.5-2 GB by 2020 because 3G tariffs are expected to drop in line with 4G tariffs Also, it is because of newcomer Reliance Jio that by 2020, 80% of India’s population will be able to afford a 4G phone, which would otherwise have been 68%. This is on expectations of Jio introducing its 4G VoLTE feature phone shortly.“In India, contribution of voice is still higher at 60-70% but we expect India to move in a direction where voice contributes only 30-40%, as per the international benchmarks,” said Siddharth Thakkar , consultant at Analysys Mason. But to sustain a viable business case in future where high data consumption can be catered to, Indian MNOs will be required to have more than 17-18% market share and will have to bring down the cost per GB for the end user to rS 30-40.Besides this, the operators will also need a large amount of spectrum, including sub-GHz spectrum, in order to provide extensive coverage as well as to support the traffic at a great scale, the research firm said. Also, to support the tariff reduction to rS 50/GB, telcos will need to target 5GB/month data usage per subscriber.Further, the telcos will have to keep an annual capex of Rs 6,500-7,500 crore and opex of Rs 20,000-25,000 crore to bring the total cost to around Rs 30,000 crore for business viability.However, the analysts said that due to the advent of VoLTE and the launch of affordable VoLTE phones mainly triggered by Jio, the competition in the market could intensify and the incumbents could lose some of their low-end voice subscribers.