This is highly localized to India, but Reliance Jio offers all three. Widest LTE coverage, fastest and most modern data infrastructure, cheapest plans. They're

This is highly localized to India, but Reliance Jio offers all three. Widest LTE coverage, fastest and most modern data infrastructure, cheapest plans. They're literally killing incumbents like Vodafone and Idea. To give an idea about the prices, I pay ₹349 ($5.46) for unlimited voice plus 1GB high speed data per day. Oh and this is not a monthly plan, it's for 3 months!