Crisil Ratings has improved Bharti Airtel and Bharti Telecom's ratings. This upgrade reflects Airtel's improved financial health and growing market share. Airtel's revenue and profit have increased significantly. The company's ARPU has also seen substantial growth. Crisil expects Airtel's operating profit to remain strong. Capex requirements are likely to decrease. Bharti Telecom benefits from dividends from Bharti Airtel.