Bharti Airtel added 0.7 million subscribers during the same period.
Stakeholders can submit their written comments by 24 August and counter comments by 31 August.
The company posted net income of Rs 1,607 crore.
The regulator has invited stakeholder's comments by 16 September.
Reliance Jio acquired 24,740 MHz spectrum worth Rs 88,078 crore.