Sunil Bharti Mittal says mobile tariffs should rise to about Rs 350 a month per user, which would still make India's tariffs 'by far the cheapest anywhere in the. Mittal said a monthly average of ₹350 would still leave India with "by far the cheapest" mobile tariffs anywhere in the world. Airtel founder Sunil Bharti Mittal believes Indians should pay around Rs 350 per month for mobile services.