India, Feb. 27 -- The most crucial element for Vodafone Idea's long-term sustainability is its stability as a telecom service provider. The telco cannot achieve healthy returns unless it maximises revenue from each of its customers. Vodafone Idea, India's third-largest telecom operator, must raise tariffs further to ensure a healthy ARPU (average revenue per user). Although the telco can certainly enhance ARPU without raising tariffs, this will not happen soon enough for the company to compete with Airtel and Jio. However, tariffs are not the root cause of the company's struggles, it is the slow addition of 4G users. After the tariff increase in July 2024, not only did Vi lose mobile users, but its rate of adding 4G users also slowed down...