Selling a 30-gigabyte plan for US$4, Jio grew at ~10 million subscribers per month for three years. Q1 2021 added "only" 5 million per month to 428 million. Incumbent Bharti is invigorated and the pandemic is strong in India. (The pandemic in April and May is horrifying, with a toll that may match the Bengali famine of 1943.)
Perhaps even more amazing, Jio claims a generous profit of ₹ 3,508 crore, about US$500 million, up 47%. Some think a low depreciation rate has inflated the profitability, but that's still a remarkable achievement.
No figures were released for Jio Fiber. That's been actively promoted but the take rate apparently remains very low.
The next task is growing Jio Platforms: Movies, music, JioMart, and more coming.