Bharti Airtel has unveiled a substantial increase in mobile tariffs, ranging between 10 per cent to 21 per cent, effective from July 3. This move follows a similar announcement by rival Reliance Jio, indicating a significant shift in pricing dynamics within the Indian telecom sector. In a press release, Bharti Airtel stated that the revised tariffs aim to maintain a modest increase, particularly on entry-level plans, to alleviate any financial strain on budget-conscious consumers. The telecom giant, led by Sunil Mittal, emphasised the necessity for average revenue per user (Arpu) to exceed Rs 300 to sustain a healthy business model conducive to making essential investments in network technology and spectrum.