Reliance Jio and Airtel will raise tariffs from July 3, 2024, to boost Average Revenue per User (ARPU), impacting millions of subscribers. Prepaid users can avoid hikes by recharging before July 3. Adjustments range from 12% to 25% for Jio and 11% to 21% for Airtel. Postpaid users will see immediate changes in their billing cycles.